{"id":25227,"date":"2021-12-17T17:30:51","date_gmt":"2021-12-17T10:30:51","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=25227"},"modified":"2021-12-17T17:30:52","modified_gmt":"2021-12-17T10:30:52","slug":"phep-dong-dang","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/phep-dong-dang\/","title":{"rendered":"PH\u00c9P \u0110\u1ed2NG D\u1ea0NG"},"content":{"rendered":"<h2><a id=\"post-25227-_Toc493273876\"><\/a><a id=\"post-25227-_Toc492701526\"><\/a><strong>A \u2013 L\u00dd THUY\u1ebeT T\u00d3M T\u1eaeT<\/strong><\/h2>\n<p><strong>1. \u0110\u1ecbnh ngh\u0129a. <\/strong><\/p>\n<p>Ph\u00e9p bi\u1ebfn h\u00ecnh <img decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-25228\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_256-47.png\" alt=\"IMG_256\" \/> \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ph\u00e9p \u0111\u1ed3ng d\u1ea1ng t\u1ec9 s\u1ed1 <img decoding=\"async\" width=\"17\" height=\"24\" class=\"wp-image-25229\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_257-46.png\" alt=\"IMG_257\" \/> <img decoding=\"async\" width=\"62\" height=\"33\" class=\"wp-image-25230\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_258-47.png\" alt=\"IMG_258\" \/> n\u1ebfu v\u1edbi hai \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"50\" height=\"28\" class=\"wp-image-25231\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_259-44.png\" alt=\"IMG_259\" \/> b\u1ea5t k\u00ec v\u00e0 \u1ea3nh <img loading=\"lazy\" decoding=\"async\" width=\"62\" height=\"28\" class=\"wp-image-25232\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_260-46.png\" alt=\"IMG_260\" \/> c\u1ee7a ch\u00fang ta lu\u00f4n c\u00f3 <img loading=\"lazy\" decoding=\"async\" width=\"124\" height=\"24\" class=\"wp-image-25233\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_261-44.png\" alt=\"IMG_261\" \/> .<\/p>\n<p><strong>Nh\u1eadn x\u00e9t.<\/strong><\/p>\n<p>\u00b7 Ph\u00e9p d\u1eddi h\u00ecnh l\u00e0 ph\u00e9p \u0111\u1ed3ng d\u1ea1ng t\u1ec9 s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"43\" height=\"24\" class=\"wp-image-25234\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_262-45.png\" alt=\"IMG_262\" \/> .<\/p>\n<p>\u00b7 Ph\u00e9p v\u1ecb t\u1ef1 t\u1ec9 s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"17\" height=\"24\" class=\"wp-image-25235\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_263-46.png\" alt=\"IMG_263\" \/> l\u00e0 ph\u00e9p \u0111\u1ed3ng d\u1ea1ng t\u1ec9 s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"33\" class=\"wp-image-25236\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_264-45.png\" alt=\"IMG_264\" \/> .<\/p>\n<p>\u00b7 N\u1ebfu th\u1ef1c hi\u1ec7n li\u00ean ti\u1ebfp c\u00e1c ph\u00e9p \u0111\u1ed3ng d\u1ea1ng th\u00ec \u0111\u01b0\u1ee3c m\u1ed9t ph\u00e9p \u0111\u1ed3ng d\u1ea1ng.<\/p>\n<p><strong>2. T\u00ednh ch\u1ea5t c\u1ee7a ph\u00e9p \u0111\u1ed3ng d\u1ea1ng.<\/strong><\/p>\n<p>Ph\u00e9p \u0111\u1ed3ng d\u1ea1ng t\u1ec9 s\u1ed1 k<\/p>\n<p>\u00b7 Bi\u1ebfn ba \u0111i\u1ec3m th\u1eb3ng h\u00e0ng th\u00e0nh ba \u0111i\u1ec3m v\u00e0 b\u1ea3o to\u00e0n th\u1ee9 t\u1ef1 gi\u1eefa ba \u0111i\u1ec3m \u0111\u00f3.<\/p>\n<p>\u00b7 Bi\u1ebfn m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng th\u00e0nh \u0111\u01b0\u1eddng th\u1eb3ng th\u00e0nh m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng song song ho\u1eb7c tr\u00f9ng v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng \u0111\u00e3 cho, bi\u1ebfn tia th\u00e0nh tia, bi\u1ebfn \u0111o\u1ea1n th\u1eb3ng th\u00e0nh \u0111o\u1ea1n th\u1eb3ng.<\/p>\n<p>\u00b7 Bi\u1ebfn m\u1ed9t tam gi\u00e1c th\u00e0nh tam gi\u00e1c \u0111\u1ed3ng d\u1ea1ng v\u1edbi tam gi\u00e1c \u0111\u00e3 cho, bi\u1ebfn g\u00f3c th\u00e0nh g\u00f3c b\u1eb1ng n\u00f3.<\/p>\n<p>\u00b7 Bi\u1ebfn \u0111\u01b0\u1eddng tr\u00f2n c\u00f3 b\u00e1n k\u00ednh <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-25237\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_265-45.png\" alt=\"IMG_265\" \/> th\u00e0nh \u0111\u01b0\u1eddng tr\u00f2n c\u00f3 b\u00e1n k\u00ednh <img loading=\"lazy\" decoding=\"async\" width=\"33\" height=\"24\" class=\"wp-image-25238\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_266-45.png\" alt=\"IMG_266\" \/><\/p>\n<p><strong>3. Hai h\u00ecnh \u0111\u1ed3ng d\u1ea1ng.<\/strong><\/p>\n<p>Hai h\u00ecnh \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u0111\u1ed3ng d\u1ea1ng n\u1ebfu c\u00f3 m\u1ed9t ph\u00e9p \u0111\u1ed3ng d\u1ea1ng bi\u1ebfn h\u00ecnh n\u00e0y th\u00e0nh h\u00ecnh kia.<\/p>\n<h2><strong>B \u2013 B\u00c0I T\u1eacP<\/strong><\/h2>\n<p><strong>C\u00e2u 1:<\/strong> M\u1ecdi ph\u00e9p d\u1eddi h\u00ecnh c\u0169ng l\u00e0 ph\u00e9p \u0111\u1ed3ng d\u1ea1ng t\u1ec9 s\u1ed1<\/p>\n<p><strong> A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"43\" height=\"24\" class=\"wp-image-25239\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_267-46.png\" alt=\"IMG_267\" \/> <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"57\" height=\"24\" class=\"wp-image-25240\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_268-46.png\" alt=\"IMG_268\" \/> <strong>C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"47\" height=\"24\" class=\"wp-image-25241\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_269-46.png\" alt=\"IMG_269\" \/> <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"46\" height=\"24\" class=\"wp-image-25242\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_270-44.png\" alt=\"IMG_270\" \/><\/p>\n<p><strong>C\u00e2u 2:<\/strong> Trong c\u00e1c m\u1ec7nh \u0111\u1ec1 sau \u0111\u00e2y m\u1ec7nh \u0111\u1ec1 n\u00e0o <strong><em>sai<\/em><\/strong>?<\/p>\n<p><strong>A. <\/strong>Ph\u00e9p d\u1eddi l\u00e0 ph\u00e9p \u0111\u1ed3ng d\u1ea1ng t\u1ec9 s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"43\" height=\"24\" class=\"wp-image-25243\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_271-46.png\" alt=\"IMG_271\" \/><\/p>\n<p><strong>B. <\/strong>Ph\u00e9p \u0111\u1ed3ng d\u1ea1ng bi\u1ebfn \u0111\u01b0\u1eddng th\u1eb3ng th\u00e0nh \u0111\u01b0\u1eddng th\u1eb3ng song song ho\u1eb7c tr\u00f9ng v\u1edbi n\u00f3.<\/p>\n<p><strong>C. <\/strong>Ph\u00e9p v\u1ecb t\u1ef1 t\u1ec9 s\u1ed1 k l\u00e0 ph\u00e9p \u0111\u1ed3ng d\u1ea1ng t\u1ec9 s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"34\" class=\"wp-image-25244\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_272-46.png\" alt=\"IMG_272\" \/><\/p>\n<p><strong>D. <\/strong>Ph\u00e9p \u0111\u1ed3ng d\u1ea1ng b\u1ea3o to\u00e0n \u0111\u1ed9 l\u1edbn g\u00f3c.<\/p>\n<p><strong>C\u00e2u 3:<\/strong> Cho h\u00ecnh v\u1ebd sau :<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"284\" height=\"177\" class=\"wp-image-25245\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_273-1.jpeg\" alt=\"IMG_273\" \/><\/p>\n<p><em>H\u00ecnh 1.88<\/em><\/p>\n<p>X\u00e9t ph\u00e9p \u0111\u1ed3ng d\u1ea1ng bi\u1ebfn h\u00ecnh thang HICD th\u00e0nh h\u00ecnh thang LJIK. T\u00ecm kh\u1eb3ng \u0111\u1ecbnh \u0111\u00fang :<\/p>\n<p><strong>A. <\/strong>Ph\u00e9p \u0111\u1ed1i x\u1ee9ng tr\u1ee5c <img loading=\"lazy\" decoding=\"async\" width=\"39\" height=\"32\" class=\"wp-image-25246\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_274-45.png\" alt=\"IMG_274\" \/> v\u00e0 ph\u00e9p v\u1ecb t\u1ef1 <img loading=\"lazy\" decoding=\"async\" width=\"43\" height=\"33\" class=\"wp-image-25247\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_275-44.png\" alt=\"IMG_275\" \/><\/p>\n<p><strong>B. <\/strong>Ph\u00e9p \u0111\u1ed1i x\u1ee9ng t\u00e2m <img loading=\"lazy\" decoding=\"async\" width=\"29\" height=\"32\" class=\"wp-image-25248\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_276-45.png\" alt=\"IMG_276\" \/> v\u00e0 ph\u00e9p v\u1ecb t\u1ef1 <img loading=\"lazy\" decoding=\"async\" width=\"47\" height=\"49\" class=\"wp-image-25249\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_277-45.png\" alt=\"IMG_277\" \/><\/p>\n<p><strong>C. <\/strong>Ph\u00e9p t\u1ecbnh ti\u1ebfn <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"32\" class=\"wp-image-25250\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_278-46.png\" alt=\"IMG_278\" \/> v\u00e0 ph\u00e9p v\u1ecb t\u1ef1 <img loading=\"lazy\" decoding=\"async\" width=\"40\" height=\"33\" class=\"wp-image-25251\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_279-44.png\" alt=\"IMG_279\" \/><\/p>\n<p><strong>D. <\/strong>Ph\u00e9p \u0111\u1ed1i x\u1ee9ng tr\u1ee5c <img loading=\"lazy\" decoding=\"async\" width=\"39\" height=\"32\" class=\"wp-image-25252\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_280-46.png\" alt=\"IMG_280\" \/> v\u00e0 ph\u00e9p v\u1ecb t\u1ef1 <img loading=\"lazy\" decoding=\"async\" width=\"49\" height=\"33\" class=\"wp-image-25253\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_281-45.png\" alt=\"IMG_281\" \/><\/p>\n<p><strong>C\u00e2u 4:<\/strong> Cho <img loading=\"lazy\" decoding=\"async\" width=\"57\" height=\"24\" class=\"wp-image-25254\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_282-46.png\" alt=\"IMG_282\" \/> \u0111\u1ec1u c\u1ea1nh 2. Qua ba ph\u00e9p \u0111\u1ed3ng d\u1ea1ng li\u00ean ti\u1ebfp : Ph\u00e9p t\u1ecbnh ti\u1ebfn <img loading=\"lazy\" decoding=\"async\" width=\"32\" height=\"32\" class=\"wp-image-25255\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_283-45.png\" alt=\"IMG_283\" \/> , ph\u00e9p quay <img loading=\"lazy\" decoding=\"async\" width=\"88\" height=\"37\" class=\"wp-image-25256\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_284-45.png\" alt=\"IMG_284\" \/> , ph\u00e9p v\u1ecb t\u1ef1 <img loading=\"lazy\" decoding=\"async\" width=\"43\" height=\"33\" class=\"wp-image-25257\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_285-46.png\" alt=\"IMG_285\" \/> , <img loading=\"lazy\" decoding=\"async\" width=\"57\" height=\"24\" class=\"wp-image-25258\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_286-45.png\" alt=\"IMG_286\" \/> bi\u1ebfn th\u00e0nh <img loading=\"lazy\" decoding=\"async\" width=\"67\" height=\"31\" class=\"wp-image-25259\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_287-46.png\" alt=\"IMG_287\" \/> . Di\u1ec7n t\u00edch <img loading=\"lazy\" decoding=\"async\" width=\"67\" height=\"31\" class=\"wp-image-25260\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_288-46.png\" alt=\"IMG_288\" \/> l\u00e0 :<\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"40\" height=\"29\" class=\"wp-image-25261\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_289-47.png\" alt=\"IMG_289\" \/><strong> B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"40\" height=\"31\" class=\"wp-image-25262\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_290-46.png\" alt=\"IMG_290\" \/><strong> C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"43\" height=\"29\" class=\"wp-image-25263\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_291-45.png\" alt=\"IMG_291\" \/><strong> D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"40\" height=\"31\" class=\"wp-image-25264\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_292-46.png\" alt=\"IMG_292\" \/><\/p>\n<p><strong>C\u00e2u 5:<\/strong> Cho h\u00ecnh vu\u00f4ng <img loading=\"lazy\" decoding=\"async\" width=\"88\" height=\"28\" class=\"wp-image-25265\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_293-46.png\" alt=\"IMG_293\" \/> thu\u1ed9c c\u1ea1nh <img loading=\"lazy\" decoding=\"async\" width=\"59\" height=\"24\" class=\"wp-image-25266\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_294-45.png\" alt=\"IMG_294\" \/> l\u00e0 ch\u00e2n \u0111\u01b0\u1eddng vu\u00f4ng g\u00f3c h\u1ea1 t\u1eeb <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-25267\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_295-44.png\" alt=\"IMG_295\" \/> \u0111\u1ebfn <img loading=\"lazy\" decoding=\"async\" width=\"33\" height=\"24\" class=\"wp-image-25268\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_296-44.png\" alt=\"IMG_296\" \/> . Ph\u00e9p \u0111\u1ed3ng d\u1ea1ng bi\u1ebfn tam gi\u00e1c <img loading=\"lazy\" decoding=\"async\" width=\"49\" height=\"24\" class=\"wp-image-25269\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_297-44.png\" alt=\"IMG_297\" \/> th\u00e0nh tam gi\u00e1c <img loading=\"lazy\" decoding=\"async\" width=\"47\" height=\"22\" class=\"wp-image-25270\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_298-44.png\" alt=\"IMG_298\" \/> . T\u00ecm \u1ea3nh c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-25271\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_299-45.png\" alt=\"IMG_299\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-25272\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_300-45.png\" alt=\"IMG_300\" \/><\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"65\" height=\"28\" class=\"wp-image-25273\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_301-45.png\" alt=\"IMG_301\" \/> ( <img loading=\"lazy\" decoding=\"async\" width=\"67\" height=\"28\" class=\"wp-image-25274\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_302-45.png\" alt=\"IMG_302\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"81\" height=\"28\" class=\"wp-image-25275\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_303-45.png\" alt=\"IMG_303\" \/> )<\/p>\n<p><strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"67\" height=\"28\" class=\"wp-image-25276\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_304-45.png\" alt=\"IMG_304\" \/> ( <img loading=\"lazy\" decoding=\"async\" width=\"67\" height=\"28\" class=\"wp-image-25277\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_305-45.png\" alt=\"IMG_305\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"81\" height=\"28\" class=\"wp-image-25278\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_306-45.png\" alt=\"IMG_306\" \/> )<\/p>\n<p><strong>C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"71\" height=\"28\" class=\"wp-image-25279\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_307-45.png\" alt=\"IMG_307\" \/><\/p>\n<p><strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"65\" height=\"24\" class=\"wp-image-25280\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_308-45.png\" alt=\"IMG_308\" \/><\/p>\n<p><strong>C\u00e2u 6:<\/strong> C\u00e1c ph\u00e9p bi\u1ebfn h\u00ecnh bi\u1ebfn \u0111\u01b0\u1eddng th\u1eb3ng th\u00e0nh \u0111\u01b0\u1eddng th\u1eb3ng song song ho\u1eb7c tr\u00f9ng v\u1edbi n\u00f3 c\u00f3 th\u1ec3 k\u1ec3 ra l\u00e0:<\/p>\n<p><strong>A. <\/strong>Ph\u00e9p v\u1ecb t\u1ef1. <strong>B. <\/strong>Ph\u00e9p \u0111\u1ed3ng d\u1ea1ng, ph\u00e9p v\u1ecb t\u1ef1.<\/p>\n<p><strong>C. <\/strong>Ph\u00e9p \u0111\u1ed3ng d\u1ea1ng, ph\u00e9p d\u1eddi h\u00ecnh, ph\u00e9p v\u1ecb t\u1ef1. <strong>D. <\/strong>Ph\u00e9p d\u1eddi d\u00ecnh, ph\u00e9p v\u1ecb t\u1ef1.<\/p>\n<p><strong>C\u00e2u 7:<\/strong> Cho tam gi\u00e1c <img loading=\"lazy\" decoding=\"async\" width=\"132\" height=\"24\" class=\"wp-image-25281\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_309-44.png\" alt=\"IMG_309\" \/> \u0111\u1ed3ng d\u1ea1ng v\u1edbi nhau theo t\u1ec9 s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"17\" height=\"24\" class=\"wp-image-25282\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_310-45.png\" alt=\"IMG_310\" \/> . Ch\u1ecdn c\u00e2u sai.<\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"17\" height=\"24\" class=\"wp-image-25283\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_311-44.png\" alt=\"IMG_311\" \/> l\u00e0 t\u1ec9 s\u1ed1 hai trung tuy\u1ebfn t\u01b0\u01a1ng \u1ee9ng<\/p>\n<p><strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"17\" height=\"24\" class=\"wp-image-25284\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_312-44.png\" alt=\"IMG_312\" \/> l\u00e0 t\u1ec9 s\u1ed1 hai \u0111\u01b0\u1eddng cao t\u01b0\u01a1ng \u1ee9ng<\/p>\n<p><strong>C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"17\" height=\"24\" class=\"wp-image-25285\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_313-43.png\" alt=\"IMG_313\" \/> l\u00e0 t\u1ec9 s\u1ed1 hai g\u00f3c t\u01b0\u01a1ng \u1ee9ng<\/p>\n<p><strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"17\" height=\"24\" class=\"wp-image-25286\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_314-43.png\" alt=\"IMG_314\" \/> l\u00e0 t\u1ec9 s\u1ed1 hai b\u00e1n k\u00ednh \u0111\u01b0\u1eddng tr\u00f2n ngo\u1ea1i ti\u1ebfp t\u01b0\u01a1ng \u1ee9ng<\/p>\n<p><strong>C\u00e2u 8:<\/strong> Trong m\u0103t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"39\" height=\"28\" class=\"wp-image-25287\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_315-43.png\" alt=\"IMG_315\" \/> cho \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"77\" height=\"33\" class=\"wp-image-25288\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_316-43.png\" alt=\"IMG_316\" \/> Ph\u00e9p \u0111\u1ed3ng d\u1ea1ng c\u00f3 \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch th\u1ef1c hi\u1ec7n li\u00ean ti\u1ebfp ph\u00e9p v\u1ecb t\u1ef1 t\u00e2m <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-25289\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_317-43.png\" alt=\"IMG_317\" \/> t\u1ec9 s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"50\" height=\"53\" class=\"wp-image-25290\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_318-43.png\" alt=\"IMG_318\" \/> v\u00e0 ph\u00e9p \u0111\u1ed1i x\u1ee9ng qua tr\u1ee5c <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"28\" class=\"wp-image-25291\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_319-43.png\" alt=\"IMG_319\" \/> s\u1ebd bi\u1ebfn <img loading=\"lazy\" decoding=\"async\" width=\"28\" height=\"22\" class=\"wp-image-25292\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_320-43.png\" alt=\"IMG_320\" \/> th\u00e0nh \u0111i\u1ec3m n\u00e0o trong c\u00e1c \u0111i\u1ec3m sau?<\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"50\" height=\"33\" class=\"wp-image-25293\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_321-42.png\" alt=\"IMG_321\" \/> <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"65\" height=\"33\" class=\"wp-image-25294\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_322-42.png\" alt=\"IMG_322\" \/> <strong>C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"64\" height=\"33\" class=\"wp-image-25295\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_323-40.png\" alt=\"IMG_323\" \/> <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"62\" height=\"33\" class=\"wp-image-25296\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_324-40.png\" alt=\"IMG_324\" \/><\/p>\n<p><strong>C\u00e2u 9:<\/strong> Trong m\u0103t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"39\" height=\"28\" class=\"wp-image-25297\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_325-40.png\" alt=\"IMG_325\" \/> cho \u0111\u01b0\u1eddng th\u1eb3ng <em>d<\/em> c\u00f3 ph\u01b0\u01a1ng tr\u00ecnh <img loading=\"lazy\" decoding=\"async\" width=\"91\" height=\"28\" class=\"wp-image-25298\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_326-40.png\" alt=\"IMG_326\" \/> Ph\u00e9p \u0111\u1ed3ng d\u1ea1ng c\u00f3 \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch th\u1ef1c hi\u1ec7n li\u00ean ti\u1ebfp ph\u00e9p v\u1ecb t\u1ef1 t\u00e2m <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-25299\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_327-40.png\" alt=\"IMG_327\" \/> t\u1ec9 s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"59\" height=\"24\" class=\"wp-image-25300\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_328-39.png\" alt=\"IMG_328\" \/> v\u00e0 ph\u00e9p \u0111\u1ed1i x\u1ee9ng qua tr\u1ee5c <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"28\" class=\"wp-image-25301\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_329-38.png\" alt=\"IMG_329\" \/> s\u1ebd bi\u1ebfn <img loading=\"lazy\" decoding=\"async\" width=\"17\" height=\"24\" class=\"wp-image-25302\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_330-39.png\" alt=\"IMG_330\" \/> th\u00e0nh \u0111\u01b0\u1eddng th\u1eb3ng n\u00e0o trong c\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng sau?<\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"91\" height=\"28\" class=\"wp-image-25303\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_331-38.png\" alt=\"IMG_331\" \/> <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"91\" height=\"28\" class=\"wp-image-25304\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_332-39.png\" alt=\"IMG_332\" \/><\/p>\n<p><strong>C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"91\" height=\"28\" class=\"wp-image-25305\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_333-39.png\" alt=\"IMG_333\" \/> <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"117\" height=\"28\" class=\"wp-image-25306\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_334-37.png\" alt=\"IMG_334\" \/><\/p>\n<p><strong>C\u00e2u 10:<\/strong> Trong m\u1eb7t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"39\" height=\"28\" class=\"wp-image-25307\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_335-38.png\" alt=\"IMG_335\" \/> cho \u0111\u01b0\u1eddng tr\u00f2n <img loading=\"lazy\" decoding=\"async\" width=\"36\" height=\"33\" class=\"wp-image-25308\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_336-38.png\" alt=\"IMG_336\" \/> c\u00f3 ph\u01b0\u01a1ng tr\u00ecnh <img loading=\"lazy\" decoding=\"async\" width=\"179\" height=\"37\" class=\"wp-image-25309\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_337-38.png\" alt=\"IMG_337\" \/> . Ph\u00e9p \u0111\u1ed3ng d\u1ea1ng c\u00f3 \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch th\u1ef1c hi\u1ec7n li\u00ean ti\u1ebfp ph\u00e9p v\u1ecb t\u1ef1 t\u00e2m <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-25310\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_338-37.png\" alt=\"IMG_338\" \/> t\u1ec9 s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"50\" height=\"53\" class=\"wp-image-25311\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_339-37.png\" alt=\"IMG_339\" \/> v\u00e0 ph\u00e9p quay t\u00e2m <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-25312\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_340-37.png\" alt=\"IMG_340\" \/> g\u00f3c <img loading=\"lazy\" decoding=\"async\" width=\"32\" height=\"28\" class=\"wp-image-25313\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_341-37.png\" alt=\"IMG_341\" \/> s\u1ebd bi\u1ebfn <img loading=\"lazy\" decoding=\"async\" width=\"36\" height=\"33\" class=\"wp-image-25314\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_342-37.png\" alt=\"IMG_342\" \/> th\u00e0nh \u0111\u01b0\u1eddng tr\u00f2n n\u00e0o trong c\u00e1c \u0111\u01b0\u1eddng tr\u00f2n sau?<\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"176\" height=\"37\" class=\"wp-image-25315\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_343-36.png\" alt=\"IMG_343\" \/> <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"169\" height=\"37\" class=\"wp-image-25316\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_344-36.png\" alt=\"IMG_344\" \/><\/p>\n<p><strong>C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"173\" height=\"37\" class=\"wp-image-25317\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_345-36.png\" alt=\"IMG_345\" \/> <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"169\" height=\"37\" class=\"wp-image-25318\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_346-35.png\" alt=\"IMG_346\" \/><\/p>\n<p><strong>C\u00e2u 11:<\/strong> Trong m\u1eb7t ph\u1eb3ng v\u1edbi h\u1ec7 tr\u1ee5c t\u1ecda \u0111\u1ed9 Oxy cho <img loading=\"lazy\" decoding=\"async\" width=\"141\" height=\"33\" class=\"wp-image-25319\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_347-34.png\" alt=\"IMG_347\" \/> Ph\u00e9p v\u1ecb t\u1ef1 t\u00e2m <img loading=\"lazy\" decoding=\"async\" width=\"71\" height=\"33\" class=\"wp-image-25320\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_348-33.png\" alt=\"IMG_348\" \/> t\u1ec9 s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"47\" height=\"24\" class=\"wp-image-25321\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_349-33.png\" alt=\"IMG_349\" \/> bi\u1ebfn \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-25322\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_350-33.png\" alt=\"IMG_350\" \/> th\u00e0nh <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"28\" class=\"wp-image-25323\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_351-33.png\" alt=\"IMG_351\" \/> ph\u00e9p \u0111\u1ed1i x\u1ee9ng t\u00e2m <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-25324\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_352-33.png\" alt=\"IMG_352\" \/> bi\u1ebfn <img loading=\"lazy\" decoding=\"async\" width=\"25\" height=\"22\" class=\"wp-image-25325\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_353-33.png\" alt=\"IMG_353\" \/> th\u00e0nh <img loading=\"lazy\" decoding=\"async\" width=\"25\" height=\"22\" class=\"wp-image-25326\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_354-33.png\" alt=\"IMG_354\" \/> . t\u1ecda \u0111\u1ed9 \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"25\" height=\"22\" class=\"wp-image-25327\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_355-33.png\" alt=\"IMG_355\" \/> l\u00e0:<\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"47\" height=\"33\" class=\"wp-image-25328\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_356-32.png\" alt=\"IMG_356\" \/> <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"47\" height=\"33\" class=\"wp-image-25329\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_357-33.png\" alt=\"IMG_357\" \/> <strong>C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"71\" height=\"33\" class=\"wp-image-25330\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_358-33.png\" alt=\"IMG_358\" \/> <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"71\" height=\"33\" class=\"wp-image-25331\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_359-31.png\" alt=\"IMG_359\" \/><\/p>\n<p><strong>C\u00e2u 12:<\/strong> Trong m\u1eb7t ph\u1eb3ng v\u1edbi h\u1ec7 tr\u1ee5c t\u1ecda \u0111\u1ed9 Oxy cho <img loading=\"lazy\" decoding=\"async\" width=\"159\" height=\"33\" class=\"wp-image-25332\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_360-30.png\" alt=\"IMG_360\" \/> Ph\u00e9p \u0111\u1ed3ng d\u1ea1ng t\u1ec9 s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"57\" height=\"53\" class=\"wp-image-25333\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_361-29.png\" alt=\"IMG_361\" \/> bi\u1ebfn \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-25334\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_362-29.png\" alt=\"IMG_362\" \/> th\u00e0nh <img loading=\"lazy\" decoding=\"async\" width=\"29\" height=\"28\" class=\"wp-image-25335\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_363-26.png\" alt=\"IMG_363\" \/> bi\u1ebfn \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-25336\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_364-28.png\" alt=\"IMG_364\" \/> th\u00e0nh <img loading=\"lazy\" decoding=\"async\" width=\"28\" height=\"24\" class=\"wp-image-25337\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_365-28.png\" alt=\"IMG_365\" \/> Khi \u0111\u00f3 \u0111\u1ed9 d\u00e0i <img loading=\"lazy\" decoding=\"async\" width=\"43\" height=\"22\" class=\"wp-image-25338\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_366-28.png\" alt=\"IMG_366\" \/> l\u00e0:<\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"47\" height=\"60\" class=\"wp-image-25339\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_367-28.png\" alt=\"IMG_367\" \/> <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"43\" height=\"33\" class=\"wp-image-25340\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_368-27.png\" alt=\"IMG_368\" \/> <strong>C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"47\" height=\"60\" class=\"wp-image-25341\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_369-27.png\" alt=\"IMG_369\" \/> <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"43\" height=\"33\" class=\"wp-image-25342\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_370-27.png\" alt=\"IMG_370\" \/><\/p>\n<p><strong>C\u00e2u 13:<\/strong> Trong m\u1eb7t ph\u1eb3ng v\u1edbi h\u1ec7 tr\u1ee5c t\u1ecda \u0111\u1ed9 Oxy cho \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"134\" height=\"28\" class=\"wp-image-25343\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_371-27.png\" alt=\"IMG_371\" \/> , Ph\u00e9p v\u1ecb t\u1ef1 t\u00e2m <img loading=\"lazy\" decoding=\"async\" width=\"57\" height=\"33\" class=\"wp-image-25344\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_372-27.png\" alt=\"IMG_372\" \/> t\u1ec9 s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"57\" height=\"24\" class=\"wp-image-25345\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_373-26.png\" alt=\"IMG_373\" \/> bi\u1ebfn \u0111\u01b0\u1eddng th\u1eb3ng <em>d<\/em> th\u00e0nh \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"24\" class=\"wp-image-25346\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_374-25.png\" alt=\"IMG_374\" \/> . ph\u00e9p \u0111\u1ed1i x\u1ee9ng tr\u1ee5c Ox bi\u1ebfn \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"24\" class=\"wp-image-25347\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_375-25.png\" alt=\"IMG_375\" \/> th\u00e0nh \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"31\" class=\"wp-image-25348\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_376-24.png\" alt=\"IMG_376\" \/> . Khi \u0111\u00f3 ph\u00e9p \u0111\u1ed3ng d\u1ea1ng bi\u1ebfn \u0111\u01b0\u1eddng th\u1eb3ng <em>d<\/em> th\u00e0nh <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"31\" class=\"wp-image-25349\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_377-23.png\" alt=\"IMG_377\" \/> c\u00f3 ph\u01b0\u01a1ng tr\u00ecnh l\u00e0:<\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"114\" height=\"28\" class=\"wp-image-25350\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_378-22.png\" alt=\"IMG_378\" \/> <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"114\" height=\"28\" class=\"wp-image-25351\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_379-22.png\" alt=\"IMG_379\" \/><\/p>\n<p><strong>C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"113\" height=\"28\" class=\"wp-image-25352\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_380-22.png\" alt=\"IMG_380\" \/> <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"114\" height=\"28\" class=\"wp-image-25353\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_381-22.png\" alt=\"IMG_381\" \/><\/p>\n<p><strong>C\u00e2u 14:<\/strong> Trong m\u1eb7t ph\u1eb3ng v\u1edbi h\u1ec7 tr\u1ee5c t\u1ecda \u0111\u1ed9 Oxy, cho \u0111\u01b0\u1eddng tr\u00f2n (C) t\u00e2m <img loading=\"lazy\" decoding=\"async\" width=\"67\" height=\"33\" class=\"wp-image-25354\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_382-22.png\" alt=\"IMG_382\" \/> b\u00e1n k\u00ednh <img loading=\"lazy\" decoding=\"async\" width=\"50\" height=\"22\" class=\"wp-image-25355\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_383-22.png\" alt=\"IMG_383\" \/> . G\u1ecdi <img loading=\"lazy\" decoding=\"async\" width=\"43\" height=\"33\" class=\"wp-image-25356\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_384-22.png\" alt=\"IMG_384\" \/> l\u00e0 \u1ea3nh c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"36\" height=\"33\" class=\"wp-image-25357\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_385-21.png\" alt=\"IMG_385\" \/> qua ph\u00e9p \u0111\u1ed3ng d\u1ea1ng t\u1ec9 s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"46\" height=\"24\" class=\"wp-image-25358\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_386-21.png\" alt=\"IMG_386\" \/> . khi \u0111\u00f3 trong c\u00e1c m\u1ec7nh \u0111\u1ec1 sau m\u1ec7nh \u0111\u1ec1 n\u00e0o <strong><em>sai<\/em><\/strong>:<\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"40\" height=\"33\" class=\"wp-image-25359\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_387-19.png\" alt=\"IMG_387\" \/> c\u00f3 ph\u01b0\u01a1ng tr\u00ecnh <img loading=\"lazy\" decoding=\"async\" width=\"187\" height=\"37\" class=\"wp-image-25360\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_388-17.png\" alt=\"IMG_388\" \/><\/p>\n<p><strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"40\" height=\"33\" class=\"wp-image-25361\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_389-15.png\" alt=\"IMG_389\" \/> c\u00f3 ph\u01b0\u01a1ng tr\u00ecnh <img loading=\"lazy\" decoding=\"async\" width=\"169\" height=\"31\" class=\"wp-image-25362\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_390-16.png\" alt=\"IMG_390\" \/><\/p>\n<p><strong>C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"40\" height=\"33\" class=\"wp-image-25363\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_391-15.png\" alt=\"IMG_391\" \/> c\u00f3 ph\u01b0\u01a1ng tr\u00ecnh <img loading=\"lazy\" decoding=\"async\" width=\"169\" height=\"31\" class=\"wp-image-25364\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_392-16.png\" alt=\"IMG_392\" \/><\/p>\n<p><strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"40\" height=\"33\" class=\"wp-image-25365\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_393-16.png\" alt=\"IMG_393\" \/> c\u00f3 b\u00e1n k\u00ednh b\u1eb1ng 6.<\/p>\n<p><strong>C\u00e2u 15:<\/strong> Trong m\u1eb7t ph\u1eb3ng v\u1edbi h\u1ec7 tr\u1ee5c t\u1ecda \u0111\u1ed9 Oxy, cho 2 \u0111\u01b0\u1eddng tr\u00f2n <img loading=\"lazy\" decoding=\"async\" width=\"36\" height=\"33\" class=\"wp-image-25366\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_394-16.png\" alt=\"IMG_394\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"40\" height=\"33\" class=\"wp-image-25367\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_395-15.png\" alt=\"IMG_395\" \/> c\u00f3 ph\u01b0\u01a1ng tr\u00ecnh <img loading=\"lazy\" decoding=\"async\" width=\"159\" height=\"31\" class=\"wp-image-25368\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_396-15.png\" alt=\"IMG_396\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"208\" height=\"31\" class=\"wp-image-25369\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_397-15.png\" alt=\"IMG_397\" \/> . G\u1ecdi <img loading=\"lazy\" decoding=\"async\" width=\"40\" height=\"33\" class=\"wp-image-25370\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_398-16.png\" alt=\"IMG_398\" \/> l\u00e0 \u1ea3nh c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"36\" height=\"33\" class=\"wp-image-25371\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_399-16.png\" alt=\"IMG_399\" \/> qua ph\u00e9p \u0111\u1ed3ng d\u1ea1ng t\u1ec9 s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"17\" height=\"24\" class=\"wp-image-25372\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_400-16.png\" alt=\"IMG_400\" \/> , khi \u0111\u00f3 gi\u00e1 tr\u1ecb <img loading=\"lazy\" decoding=\"async\" width=\"17\" height=\"24\" class=\"wp-image-25373\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_401-16.png\" alt=\"IMG_401\" \/> l\u00e0:<\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"58\" class=\"wp-image-25374\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_402-16.png\" alt=\"IMG_402\" \/> <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"58\" class=\"wp-image-25375\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_403-16.png\" alt=\"IMG_403\" \/> <strong>C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"29\" height=\"58\" class=\"wp-image-25376\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_404-16.png\" alt=\"IMG_404\" \/> <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"29\" height=\"58\" class=\"wp-image-25377\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_405-16.png\" alt=\"IMG_405\" \/><\/p>\n<p><strong>C\u00e2u 16:<\/strong> Trong m\u1eb7t ph\u1eb3ng v\u1edbi h\u1ec7 tr\u1ee5c t\u1ecda \u0111\u1ed9 Oxy, cho hai Elip <img loading=\"lazy\" decoding=\"async\" width=\"40\" height=\"33\" class=\"wp-image-25378\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_406-16.png\" alt=\"IMG_406\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"43\" height=\"33\" class=\"wp-image-25379\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_407-16.png\" alt=\"IMG_407\" \/> l\u1ea7n l\u01b0\u1ee3t c\u00f3 ph\u01b0\u01a1ng tr\u00ecnh l\u00e0: <img loading=\"lazy\" decoding=\"async\" width=\"109\" height=\"60\" class=\"wp-image-25380\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_408-16.png\" alt=\"IMG_408\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"109\" height=\"60\" class=\"wp-image-25381\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_409-16.png\" alt=\"IMG_409\" \/> . Khi \u0111\u00f3 <img loading=\"lazy\" decoding=\"async\" width=\"43\" height=\"33\" class=\"wp-image-25382\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_410-16.png\" alt=\"IMG_410\" \/> l\u00e0 \u1ea3nh c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"40\" height=\"33\" class=\"wp-image-25383\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_411-16.png\" alt=\"IMG_411\" \/> qua ph\u00e9p \u0111\u1ed3ng d\u1ea1ng t\u1ec9 s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"17\" height=\"24\" class=\"wp-image-25384\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_412-16.png\" alt=\"IMG_412\" \/> b\u1eb1ng:<\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"58\" class=\"wp-image-25385\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_413-16.png\" alt=\"IMG_413\" \/> <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"58\" class=\"wp-image-25386\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_414-16.png\" alt=\"IMG_414\" \/> <strong>C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"60\" height=\"25\" class=\"wp-image-25387\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_415-16.png\" alt=\"IMG_415\" \/> <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"43\" height=\"24\" class=\"wp-image-25388\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_416-16.png\" alt=\"IMG_416\" \/><\/p>\n<p><strong>C\u00e2u 17:<\/strong> Trong m\u1eb7t ph\u1eb3ng v\u1edbi h\u1ec7 t\u1ecda \u0111\u1ed9 Oxy, cho hai \u0111\u01b0\u1eddng tr\u00f2n: <img loading=\"lazy\" decoding=\"async\" width=\"239\" height=\"33\" class=\"wp-image-25389\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_417-16.png\" alt=\"IMG_417\" \/> , <img loading=\"lazy\" decoding=\"async\" width=\"229\" height=\"33\" class=\"wp-image-25390\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_418-16.png\" alt=\"IMG_418\" \/> . N\u1ebfu c\u00f3 ph\u00e9p \u0111\u1ed3ng d\u1ea1ng bi\u1ebfn \u0111\u01b0\u1eddng tr\u00f2n <img loading=\"lazy\" decoding=\"async\" width=\"36\" height=\"33\" class=\"wp-image-25391\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_419-15.png\" alt=\"IMG_419\" \/> th\u00e0nh \u0111\u01b0\u1eddng tr\u00f2n <img loading=\"lazy\" decoding=\"async\" width=\"37\" height=\"33\" class=\"wp-image-25392\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_420-15.png\" alt=\"IMG_420\" \/> th\u00ec t\u1ec9 s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"17\" height=\"24\" class=\"wp-image-25393\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_421-15.png\" alt=\"IMG_421\" \/> c\u1ee7a ph\u00e9p \u0111\u1ed3ng d\u1ea1ng \u0111\u00f3 b\u1eb1ng:<\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-25394\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_422-15.png\" alt=\"IMG_422\" \/><strong> B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"24\" class=\"wp-image-25395\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_423-15.png\" alt=\"IMG_423\" \/><strong> C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"17\" height=\"22\" class=\"wp-image-25396\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_424-15.png\" alt=\"IMG_424\" \/><strong> D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"24\" class=\"wp-image-25397\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_425-15.png\" alt=\"IMG_425\" \/><\/p>\n<p><strong>C\u00e2u 18:<\/strong> Trong m\u1eb7t ph\u1eb3ng v\u1edbi h\u1ec7 t\u1ecda \u0111\u1ed9 Oxy, cho b\u1ed1n \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"149\" height=\"33\" class=\"wp-image-25398\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_426-15.png\" alt=\"IMG_426\" \/> <img loading=\"lazy\" decoding=\"async\" width=\"85\" height=\"33\" class=\"wp-image-25399\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_427-15.png\" alt=\"IMG_427\" \/> <img loading=\"lazy\" decoding=\"async\" width=\"67\" height=\"33\" class=\"wp-image-25400\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_428-15.png\" alt=\"IMG_428\" \/> . N\u1ebfu c\u00f3 ph\u00e9p \u0111\u1ed3ng d\u1ea1ng bi\u1ebfn \u0111o\u1ea1n th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"33\" height=\"22\" class=\"wp-image-25401\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_429-15.png\" alt=\"IMG_429\" \/> th\u00e0nh \u0111o\u1ea1n th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"33\" height=\"24\" class=\"wp-image-25402\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_430-14.png\" alt=\"IMG_430\" \/> th\u00ec t\u1ec9 s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"17\" height=\"24\" class=\"wp-image-25403\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_431-13.png\" alt=\"IMG_431\" \/> c\u1ee7a ph\u00e9p \u0111\u1ed3ng d\u1ea1ng \u0111\u00f3 b\u1eb1ng:<\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"17\" height=\"22\" class=\"wp-image-25404\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_432-13.png\" alt=\"IMG_432\" \/><strong> B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"53\" class=\"wp-image-25405\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_433-13.png\" alt=\"IMG_433\" \/><strong> C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"53\" class=\"wp-image-25406\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_434-13.png\" alt=\"IMG_434\" \/><strong> D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"53\" class=\"wp-image-25407\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_435-13.png\" alt=\"IMG_435\" \/><\/p>\n<p><strong>C\u00e2u 19:<\/strong> Cho tam gi\u00e1c <img loading=\"lazy\" decoding=\"async\" width=\"47\" height=\"24\" class=\"wp-image-25408\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_436-13.png\" alt=\"IMG_436\" \/> vu\u00f4ng c\u00e2n t\u1ea1i <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"24\" class=\"wp-image-25409\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_437-14.png\" alt=\"IMG_437\" \/> N\u1ebfu c\u00f3 ph\u00e9p \u0111\u1ed3ng d\u1ea1ng bi\u1ebfn c\u1ea1nh <img loading=\"lazy\" decoding=\"async\" width=\"36\" height=\"24\" class=\"wp-image-25410\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_438-14.png\" alt=\"IMG_438\" \/> th\u00e0nh c\u1ea1nh <img loading=\"lazy\" decoding=\"async\" width=\"33\" height=\"24\" class=\"wp-image-25411\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_439-14.png\" alt=\"IMG_439\" \/> th\u00ec t\u1ec9 s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"17\" height=\"24\" class=\"wp-image-25412\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_440-14.png\" alt=\"IMG_440\" \/> c\u1ee7a ph\u00e9p \u0111\u1ed3ng d\u1ea1ng \u0111\u00f3 b\u1eb1ng:<\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"17\" height=\"22\" class=\"wp-image-25413\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_441-14.png\" alt=\"IMG_441\" \/><strong> B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"32\" height=\"29\" class=\"wp-image-25414\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_442-14.png\" alt=\"IMG_442\" \/><strong> C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"31\" class=\"wp-image-25415\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_443-12.png\" alt=\"IMG_443\" \/><strong> D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"36\" height=\"57\" class=\"wp-image-25416\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_444-12.png\" alt=\"IMG_444\" \/><\/p>\n<p><strong>C\u00e2u 20:<\/strong> Trong m\u1eb7t ph\u1eb3ng v\u1edbi h\u1ec7 t\u1ecda \u0111\u1ed9 Oxy, cho \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"74\" height=\"33\" class=\"wp-image-25417\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_445-12.png\" alt=\"IMG_445\" \/> . Th\u1ef1c hi\u1ec7n li\u00ean ti\u1ebfp hai ph\u00e9p v\u1ecb t\u1ef1 <img loading=\"lazy\" decoding=\"async\" width=\"68\" height=\"33\" class=\"wp-image-25418\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_446-11.png\" alt=\"IMG_446\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"91\" height=\"57\" class=\"wp-image-25419\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_447-11.png\" alt=\"IMG_447\" \/> \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-25420\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_448-11.png\" alt=\"IMG_448\" \/> bi\u1ebfn th\u00e0nh \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"22\" class=\"wp-image-25421\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_449-9.png\" alt=\"IMG_449\" \/> c\u00f3 t\u1ecda \u0111\u1ed9 l\u00e0:<\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"60\" height=\"33\" class=\"wp-image-25422\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_450-9.png\" alt=\"IMG_450\" \/><strong> B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"60\" height=\"33\" class=\"wp-image-25423\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_451-9.png\" alt=\"IMG_451\" \/><strong> C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"59\" height=\"33\" class=\"wp-image-25424\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_452-9.png\" alt=\"IMG_452\" \/><strong> D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"67\" height=\"33\" class=\"wp-image-25425\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_453-9.png\" alt=\"IMG_453\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A \u2013 L\u00dd THUY\u1ebeT T\u00d3M T\u1eaeT 1. \u0110\u1ecbnh ngh\u0129a. Ph\u00e9p bi\u1ebfn h\u00ecnh \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ph\u00e9p \u0111\u1ed3ng d\u1ea1ng t\u1ec9 s\u1ed1 n\u1ebfu v\u1edbi hai \u0111i\u1ec3m b\u1ea5t k\u00ec v\u00e0 \u1ea3nh c\u1ee7a ch\u00fang ta lu\u00f4n c\u00f3 . Nh\u1eadn x\u00e9t. \u00b7 Ph\u00e9p d\u1eddi h\u00ecnh l\u00e0 ph\u00e9p \u0111\u1ed3ng d\u1ea1ng t\u1ec9 s\u1ed1 . \u00b7 Ph\u00e9p v\u1ecb t\u1ef1 t\u1ec9 s\u1ed1 l\u00e0 ph\u00e9p [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[42],"tags":[],"class_list":["post-25227","post","type-post","status-publish","format-standard","hentry","category-toan-lop-11"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/25227","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=25227"}],"version-history":[{"count":1,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/25227\/revisions"}],"predecessor-version":[{"id":25426,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/25227\/revisions\/25426"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=25227"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=25227"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=25227"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}