{"id":20968,"date":"2021-12-17T16:16:41","date_gmt":"2021-12-17T09:16:41","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=20968"},"modified":"2021-12-17T16:16:43","modified_gmt":"2021-12-17T09:16:43","slug":"hai-duong-thang-vuong-goc","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/hai-duong-thang-vuong-goc\/","title":{"rendered":"HAI \u0110\u01af\u1edcNG TH\u1eb2NG VU\u00d4NG G\u00d3C"},"content":{"rendered":"<h2><strong>A \u2013 L\u00dd THUY\u1ebeT T\u00d3M T\u1eaeT<\/strong><\/h2>\n<p><strong>1. Vect\u01a1 ch\u1ec9 ph\u01b0\u01a1ng c\u1ee7a \u0111\u01b0\u1eddng th\u1eb3ng:<\/strong> <img decoding=\"async\" width=\"47\" height=\"29\" class=\"wp-image-20969\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_256-18.png\" alt=\"IMG_256\" \/> l\u00e0 VTCP c\u1ee7a d n\u1ebfu gi\u00e1 c\u1ee7a <img decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-20970\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_257-17.png\" alt=\"IMG_257\" \/> song song ho\u1eb7c tr\u00f9ng v\u1edbi d.<\/p>\n<p><strong>2. G\u00f3c gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng:<\/strong><\/p>\n<p>\u00b7 a\u00a2\/\/a, b\u00a2\/\/b \u00de <img decoding=\"async\" width=\"122\" height=\"35\" class=\"wp-image-20971\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_258-18.png\" alt=\"IMG_258\" \/><\/p>\n<p>\u00b7 Gi\u1ea3 s\u1eed <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-20972\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_259-16.png\" alt=\"IMG_259\" \/> l\u00e0 VTCP c\u1ee7a a, <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-20973\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_260-18.png\" alt=\"IMG_260\" \/> l\u00e0 VTCP c\u1ee7a b, <img loading=\"lazy\" decoding=\"async\" width=\"81\" height=\"27\" class=\"wp-image-20974\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_261-15.png\" alt=\"IMG_261\" \/> .<\/p>\n<p>Khi \u0111\u00f3: <img loading=\"lazy\" decoding=\"async\" width=\"328\" height=\"67\" class=\"wp-image-20975\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_262-16.png\" alt=\"IMG_262\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_262-16.png 328w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_262-16-300x61.png 300w\" sizes=\"(max-width: 328px) 100vw, 328px\" \/><\/p>\n<p>\u00b7 N\u1ebfu a\/\/b ho\u1eb7c a \u00ba b th\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"86\" height=\"35\" class=\"wp-image-20976\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_263-17.png\" alt=\"IMG_263\" \/><\/p>\n<p><strong>Ch\u00fa \u00fd:<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"131\" height=\"35\" class=\"wp-image-20977\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_264-16.png\" alt=\"IMG_264\" \/><\/p>\n<p><strong>3. Hai \u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c:<\/strong><\/p>\n<p>\u00b7 a ^ b \u00db <img loading=\"lazy\" decoding=\"async\" width=\"96\" height=\"35\" class=\"wp-image-20978\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_265-16.png\" alt=\"IMG_265\" \/><\/p>\n<p>\u00b7 Gi\u1ea3 s\u1eed <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-20979\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_266-16.png\" alt=\"IMG_266\" \/> l\u00e0 VTCP c\u1ee7a a, <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-20980\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_267-17.png\" alt=\"IMG_267\" \/> l\u00e0 VTCP c\u1ee7a b. Khi \u0111\u00f3 <img loading=\"lazy\" decoding=\"async\" width=\"135\" height=\"24\" class=\"wp-image-20981\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_268-17.png\" alt=\"IMG_268\" \/> .<\/p>\n<p>\u00b7 L\u01b0u \u00fd: Hai \u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c v\u1edbi nhau c\u00f3 th\u1ec3 c\u1eaft nhau ho\u1eb7c ch\u00e9o nhau.<\/p>\n<h2><strong>B \u2013 B\u00c0I T\u1eacP<\/strong><\/h2>\n<p><strong>C\u00e2u 1:<\/strong> Trong kh\u00f4ng gian cho ba \u0111\u01b0\u1eddng th\u1eb3ng ph\u00e2n bi\u1ec7t <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-20982\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_269-17.png\" alt=\"IMG_269\" \/> , <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-20983\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_270-15.png\" alt=\"IMG_270\" \/> , <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-20984\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_271-17.png\" alt=\"IMG_271\" \/> . Kh\u1eb3ng \u0111\u1ecbnh n\u00e0o sau \u0111\u00e2y <strong>\u0111\u00fang<\/strong>?<\/p>\n<p><strong>A. <\/strong>N\u1ebfu <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-20985\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_272-17.png\" alt=\"IMG_272\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-20986\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_273-15.png\" alt=\"IMG_273\" \/> c\u00f9ng vu\u00f4ng g\u00f3c v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-20987\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_274-17.png\" alt=\"IMG_274\" \/> th\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"47\" height=\"27\" class=\"wp-image-20988\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_275-16.png\" alt=\"IMG_275\" \/> .<\/p>\n<p><strong>B. <\/strong>N\u1ebfu <img loading=\"lazy\" decoding=\"async\" width=\"47\" height=\"27\" class=\"wp-image-20989\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_276-17.png\" alt=\"IMG_276\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"49\" height=\"24\" class=\"wp-image-20990\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_277-17.png\" alt=\"IMG_277\" \/> th\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"47\" height=\"24\" class=\"wp-image-20991\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_278-17.png\" alt=\"IMG_278\" \/> .<\/p>\n<p><strong>C. <\/strong>N\u1ebfu g\u00f3c gi\u1eefa <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-20992\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_279-15.png\" alt=\"IMG_279\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-20993\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_280-17.png\" alt=\"IMG_280\" \/> b\u1eb1ng g\u00f3c gi\u1eefa <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-20994\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_281-16.png\" alt=\"IMG_281\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-20995\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_282-17.png\" alt=\"IMG_282\" \/> th\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"47\" height=\"27\" class=\"wp-image-20996\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_283-16.png\" alt=\"IMG_283\" \/> .<\/p>\n<p><strong>D. <\/strong>N\u1ebfu <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-20997\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_284-16.png\" alt=\"IMG_284\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-20998\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_285-17.png\" alt=\"IMG_285\" \/> c\u00f9ng n\u1eb1m trong mp <img loading=\"lazy\" decoding=\"async\" width=\"64\" height=\"35\" class=\"wp-image-20999\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_286-16.png\" alt=\"IMG_286\" \/> th\u00ec g\u00f3c gi\u1eefa <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21000\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_287-17.png\" alt=\"IMG_287\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21001\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_288-17.png\" alt=\"IMG_288\" \/> b\u1eb1ng g\u00f3c gi\u1eefa <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21002\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_289-18.png\" alt=\"IMG_289\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21003\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_290-17.png\" alt=\"IMG_290\" \/> .<\/p>\n<p><strong><em>H\u01b0\u1edbng d\u1eabn gi\u1ea3i:<\/em><\/strong><\/p>\n<p><strong>Ch\u1ecdn B.<\/strong><\/p>\n<p>N\u1ebfu <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21004\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_291-17.png\" alt=\"IMG_291\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21005\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_292-17.png\" alt=\"IMG_292\" \/> c\u00f9ng vu\u00f4ng g\u00f3c v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21006\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_293-17.png\" alt=\"IMG_293\" \/> th\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21007\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_294-17.png\" alt=\"IMG_294\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21008\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_295-16.png\" alt=\"IMG_295\" \/> ho\u1eb7c song song ho\u1eb7c ch\u00e9o nhau.<\/p>\n<p>C sai do:<\/p>\n<p>Gi\u1ea3 s\u1eed hai \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21009\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_296-17.png\" alt=\"IMG_296\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21010\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_297-17.png\" alt=\"IMG_297\" \/> ch\u00e9o nhau, ta d\u1ef1ng \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21011\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_298-17.png\" alt=\"IMG_298\" \/> l\u00e0 \u0111\u01b0\u1eddng vu\u00f4ng g\u00f3c chung c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21012\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_299-17.png\" alt=\"IMG_299\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21013\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_300-17.png\" alt=\"IMG_300\" \/> . Khi \u0111\u00f3 g\u00f3c gi\u1eefa <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21014\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_301-17.png\" alt=\"IMG_301\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21015\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_302-17.png\" alt=\"IMG_302\" \/> b\u1eb1ng v\u1edbi g\u00f3c gi\u1eefa <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21016\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_303-17.png\" alt=\"IMG_303\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21017\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_304-17.png\" alt=\"IMG_304\" \/> v\u00e0 c\u00f9ng b\u1eb1ng <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"24\" class=\"wp-image-21018\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_305-17.png\" alt=\"IMG_305\" \/> , nh\u01b0ng hi\u1ec3n nhi\u00ean hai \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21019\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_306-17.png\" alt=\"IMG_306\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21020\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_307-17.png\" alt=\"IMG_307\" \/> kh\u00f4ng song song.<\/p>\n<p>D sai do: gi\u1ea3 s\u1eed <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21021\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_308-17.png\" alt=\"IMG_308\" \/> vu\u00f4ng g\u00f3c v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21022\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_309-16.png\" alt=\"IMG_309\" \/> , <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21023\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_310-17.png\" alt=\"IMG_310\" \/> song song v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21024\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_311-16.png\" alt=\"IMG_311\" \/> , khi \u0111\u00f3 g\u00f3c gi\u1eefa <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21025\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_312-16.png\" alt=\"IMG_312\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21026\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_313-16.png\" alt=\"IMG_313\" \/> b\u1eb1ng <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"24\" class=\"wp-image-21027\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_314-16.png\" alt=\"IMG_314\" \/> , c\u00f2n g\u00f3c gi\u1eefa <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21028\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_315-16.png\" alt=\"IMG_315\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21029\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_316-16.png\" alt=\"IMG_316\" \/> b\u1eb1ng <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"24\" class=\"wp-image-21030\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_317-16.png\" alt=\"IMG_317\" \/> .<\/p>\n<p>Do \u0111\u00f3 B \u0111\u00fang.<\/p>\n<p><strong>C\u00e2u 2:<\/strong> Trong c\u00e1c m\u1ec7nh \u0111\u1ec1 sau m\u1ec7nh \u0111\u1ec1 n\u00e0o \u0111\u00fang?<\/p>\n<p><strong>A. <\/strong>G\u00f3c gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21031\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_318-16.png\" alt=\"IMG_318\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21032\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_319-16.png\" alt=\"IMG_319\" \/> b\u1eb1ng g\u00f3c gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21033\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_320-16.png\" alt=\"IMG_320\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21034\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_321-15.png\" alt=\"IMG_321\" \/> khi <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21035\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_322-15.png\" alt=\"IMG_322\" \/> song song v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21036\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_323-14.png\" alt=\"IMG_323\" \/> (ho\u1eb7c <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21037\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_324-14.png\" alt=\"IMG_324\" \/> tr\u00f9ng v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21038\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_325-14.png\" alt=\"IMG_325\" \/> ).<\/p>\n<p><strong>B. <\/strong>G\u00f3c gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21039\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_326-14.png\" alt=\"IMG_326\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21040\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_327-14.png\" alt=\"IMG_327\" \/> b\u1eb1ng g\u00f3c gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21041\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_328-13.png\" alt=\"IMG_328\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21042\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_329-13.png\" alt=\"IMG_329\" \/> th\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21043\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_330-13.png\" alt=\"IMG_330\" \/> song song v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21044\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_331-13.png\" alt=\"IMG_331\" \/><\/p>\n<p><strong>C. <\/strong>G\u00f3c gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng l\u00e0 g\u00f3c nh\u1ecdn.<\/p>\n<p><strong>D. <\/strong>G\u00f3c gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng b\u1eb1ng g\u00f3c gi\u1eefa hai v\u00e9ct\u01a1 ch\u1ec9 ph\u01b0\u01a1ng c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng \u0111\u00f3.<\/p>\n<p><strong><em>H\u01b0\u1edbng d\u1eabn gi\u1ea3i:<\/em><\/strong><\/p>\n<p><strong>Ch\u1ecdn A. <\/strong><\/p>\n<p><strong>C\u00e2u 3:<\/strong> Cho t\u1ee9 di\u1ec7n <img loading=\"lazy\" decoding=\"async\" width=\"61\" height=\"24\" class=\"wp-image-21045\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_332-13.png\" alt=\"IMG_332\" \/> c\u00f3 hai c\u1eb7p c\u1ea1nh \u0111\u1ed1i vu\u00f4ng g\u00f3c. Trong c\u00e1c m\u1ec7nh \u0111\u1ec1 sau m\u1ec7nh \u0111\u1ec1 n\u00e0o \u0111\u00fang?<\/p>\n<p><strong>A. <\/strong>T\u1ee9 di\u1ec7n c\u00f3 \u00edt nh\u1ea5t m\u1ed9t m\u1eb7t l\u00e0 tam gi\u00e1c nh\u1ecdn.<\/p>\n<p><strong>B. <\/strong>T\u1ee9 di\u1ec7n c\u00f3 \u00edt nh\u1ea5t hai m\u1eb7t l\u00e0 tam gi\u00e1c nh\u1ecdn.<\/p>\n<p><strong>C. <\/strong>T\u1ee9 di\u1ec7n c\u00f3 \u00edt nh\u1ea5t ba m\u1eb7t l\u00e0 tam gi\u00e1c nh\u1ecdn.<\/p>\n<p><strong>D. <\/strong>T\u1ee9 di\u1ec7n c\u00f3 c\u1ea3 b\u1ed1n m\u1eb7t l\u00e0 tam gi\u00e1c nh\u1ecdn.<\/p>\n<p><strong><em>H\u01b0\u1edbng d\u1eabn gi\u1ea3i:<\/em><\/strong><\/p>\n<p><strong>Ch\u1ecdn A. <\/strong><\/p>\n<p><strong>C\u00e2u 4:<\/strong> Trong c\u00e1c m\u1ec7nh \u0111\u1ec1 d\u01b0\u1edbi \u0111\u00e2y m\u1ec7nh \u0111\u1ec1 \u0111\u00fang l\u00e0?<\/p>\n<p><strong>A. <\/strong>Cho hai \u0111\u01b0\u1eddng th\u1eb3ng song song, \u0111\u01b0\u1eddng th\u1eb3ng n\u00e0o vu\u00f4ng g\u00f3c v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng th\u1ee9 nh\u1ea5t th\u00ec c\u0169ng vu\u00f4ng g\u00f3c v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng th\u1ee9 hai.<\/p>\n<p><strong>B. <\/strong>Trong kh\u00f4ng gian, hai \u0111\u01b0\u1eddng th\u1eb3ng ph\u00e2n bi\u1ec7t c\u00f9ng vu\u00f4ng g\u00f3c v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng th\u1ee9 ba th\u00ec song song v\u1edbi nhau.<\/p>\n<p><strong>C. <\/strong>Hai \u0111\u01b0\u1eddng th\u1eb3ng ph\u00e2n bi\u1ec7t vu\u00f4ng g\u00f3c v\u1edbi nhau th\u00ec ch\u00fang c\u1eaft nhau.<\/p>\n<p><strong>D. <\/strong>Hai \u0111\u01b0\u1eddng th\u1eb3ng ph\u00e2n bi\u1ec7t c\u00f9ng vu\u00f4ng g\u00f3c v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng th\u1ee9 ba th\u00ec vu\u00f4ng g\u00f3c v\u1edbi nhau.<\/p>\n<p><strong><em>H\u01b0\u1edbng d\u1eabn gi\u1ea3i:<\/em><\/strong><\/p>\n<p><strong>Ch\u1ecdn A. <\/strong><\/p>\n<p>Theo l\u00fd thuy\u1ebft.<\/p>\n<p><strong>C\u00e2u 5:<\/strong> Trong c\u00e1c m\u1ec7nh \u0111\u1ec1 sau \u0111\u00e2y, m\u1ec7nh \u0111\u1ec1 n\u00e0o l\u00e0 \u0111\u00fang?<\/p>\n<p><strong>A. <\/strong>N\u1ebfu \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21046\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_333-13.png\" alt=\"IMG_333\" \/> vu\u00f4ng g\u00f3c v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21047\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_334-12.png\" alt=\"IMG_334\" \/> v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21048\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_335-12.png\" alt=\"IMG_335\" \/> vu\u00f4ng g\u00f3c v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21049\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_336-12.png\" alt=\"IMG_336\" \/> th\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21050\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_337-12.png\" alt=\"IMG_337\" \/> vu\u00f4ng g\u00f3c v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21051\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_338-12.png\" alt=\"IMG_338\" \/><\/p>\n<p><strong>B. <\/strong>Cho ba \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"61\" height=\"27\" class=\"wp-image-21052\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_339-12.png\" alt=\"IMG_339\" \/> vu\u00f4ng g\u00f3c v\u1edbi nhau t\u1eebng \u0111\u00f4i m\u1ed9t. N\u1ebfu c\u00f3 m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"24\" class=\"wp-image-21053\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_340-12.png\" alt=\"IMG_340\" \/> vu\u00f4ng g\u00f3c v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21054\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_341-12.png\" alt=\"IMG_341\" \/> th\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"24\" class=\"wp-image-21055\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_342-12.png\" alt=\"IMG_342\" \/> song song v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21056\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_343-12.png\" alt=\"IMG_343\" \/> ho\u1eb7c <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21057\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_344-12.png\" alt=\"IMG_344\" \/><\/p>\n<p><strong>C. <\/strong>N\u1ebfu \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21058\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_345-12.png\" alt=\"IMG_345\" \/> vu\u00f4ng g\u00f3c v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21059\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_346-12.png\" alt=\"IMG_346\" \/> v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21060\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_347-12.png\" alt=\"IMG_347\" \/> song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21061\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_348-12.png\" alt=\"IMG_348\" \/> th\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21062\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_349-12.png\" alt=\"IMG_349\" \/> vu\u00f4ng g\u00f3c v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21063\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_350-12.png\" alt=\"IMG_350\" \/><\/p>\n<p><strong>D. <\/strong>Cho hai \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21064\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_351-12.png\" alt=\"IMG_351\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21065\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_352-12.png\" alt=\"IMG_352\" \/> song song v\u1edbi nhau. M\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21066\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_353-12.png\" alt=\"IMG_353\" \/> vu\u00f4ng g\u00f3c v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21067\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_354-12.png\" alt=\"IMG_354\" \/> th\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21068\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_355-12.png\" alt=\"IMG_355\" \/> vu\u00f4ng g\u00f3c v\u1edbi m\u1ecdi \u0111\u01b0\u1eddng th\u1eb3ng n\u1eb1m trong m\u1eb7t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"55\" height=\"35\" class=\"wp-image-21069\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_356-12.png\" alt=\"IMG_356\" \/> .<\/p>\n<p><strong><em>H\u01b0\u1edbng d\u1eabn gi\u1ea3i:<\/em><\/strong><\/p>\n<p><strong>Ch\u1ecdn C. <\/strong><\/p>\n<p><strong>C\u00e2u 6:<\/strong> Trong c\u00e1c m\u1ec7nh \u0111\u1ec1 sau \u0111\u00e2y, m\u1ec7nh \u0111\u1ec1 n\u00e0o l\u00e0 \u0111\u00fang?<\/p>\n<p><strong>A. <\/strong>M\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft hai \u0111\u01b0\u1eddng th\u1eb3ng cho tr\u01b0\u1edbc th\u00ec c\u1ea3 ba \u0111\u01b0\u1eddng th\u1eb3ng \u0111\u00f3 c\u00f9ng n\u1eb1m trong m\u1ed9t m\u1eb7t ph\u1eb3ng<\/p>\n<p><strong>B. <\/strong>Ba \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau t\u1eebng \u0111\u00f4i m\u1ed9t v\u00e0 kh\u00f4ng n\u1eb1m trong m\u1ed9t m\u1eb7t ph\u1eb3ng th\u00ec \u0111\u1ed3ng quy<\/p>\n<p><strong>C. <\/strong>M\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft hai \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau cho tr\u01b0\u1edbc th\u00ec c\u1ea3 ba \u0111\u01b0\u1eddng th\u1eb3ng \u0111\u00f3 c\u00f9ng n\u1eb1m trong m\u1ed9t m\u1eb7t ph\u1eb3ng<\/p>\n<p><strong>D. <\/strong>Ba \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau t\u1eebng \u0111\u00f4i m\u1ed9t th\u00ec c\u00f9ng n\u1eb1m trong m\u1ed9t m\u1eb7t ph\u1eb3ng<\/p>\n<p><strong><em>H\u01b0\u1edbng d\u1eabn gi\u1ea3i:<\/em><\/strong><\/p>\n<p><strong>Ch\u1ecdn B. <\/strong><\/p>\n<p>G\u1ecdi <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"30\" class=\"wp-image-21070\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_357-12.png\" alt=\"IMG_357\" \/> , <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"30\" class=\"wp-image-21071\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_358-12.png\" alt=\"IMG_358\" \/> , <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"30\" class=\"wp-image-21072\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_359-12.png\" alt=\"IMG_359\" \/> l\u00e0 3 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau t\u1eebng \u0111\u00f4i m\u1ed9t. Gi\u1ea3 s\u1eed <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"30\" class=\"wp-image-21073\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_360-12.png\" alt=\"IMG_360\" \/> , <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"30\" class=\"wp-image-21074\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_361-12.png\" alt=\"IMG_361\" \/> c\u1eaft nhau t\u1ea1i <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-21075\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_362-12.png\" alt=\"IMG_362\" \/> , v\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"30\" class=\"wp-image-21076\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_363-10.png\" alt=\"IMG_363\" \/> kh\u00f4ng n\u1eb1m c\u00f9ng m\u1eb7t ph\u1eb3ng v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"30\" class=\"wp-image-21077\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_364-12.png\" alt=\"IMG_364\" \/> , <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"30\" class=\"wp-image-21078\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_365-12.png\" alt=\"IMG_365\" \/> m\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"30\" class=\"wp-image-21079\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_366-12.png\" alt=\"IMG_366\" \/> c\u1eaft <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"30\" class=\"wp-image-21080\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_367-12.png\" alt=\"IMG_367\" \/> , <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"30\" class=\"wp-image-21081\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_368-12.png\" alt=\"IMG_368\" \/> n\u00ean <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"30\" class=\"wp-image-21082\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_369-12.png\" alt=\"IMG_369\" \/> ph\u1ea3i \u0111i qua <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-21083\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_370-12.png\" alt=\"IMG_370\" \/> . Th\u1eadt v\u1eady gi\u1ea3 s\u1eed <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"30\" class=\"wp-image-21084\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_371-12.png\" alt=\"IMG_371\" \/> kh\u00f4ng \u0111i qua <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-21085\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_372-12.png\" alt=\"IMG_372\" \/> th\u00ec n\u00f3 ph\u1ea3i c\u1eaft <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"30\" class=\"wp-image-21086\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_373-11.png\" alt=\"IMG_373\" \/> , <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"30\" class=\"wp-image-21087\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_374-11.png\" alt=\"IMG_374\" \/> t\u1ea1i hai \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-21088\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_375-11.png\" alt=\"IMG_375\" \/> , <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-21089\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_376-10.png\" alt=\"IMG_376\" \/> \u0111i\u1ec1u n\u00e0y l\u00e0 v\u00f4 l\u00ed, m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng kh\u00f4ng th\u1ec3 c\u1eaft m\u1ed9t m\u1eb7t ph\u1eb3ng t\u1ea1i hai \u0111i\u1ec3m ph\u00e2n bi\u1ec7t.<\/p>\n<p><strong>C\u00e2u 7:<\/strong> Trong c\u00e1c kh\u1eb3ng \u0111\u1ecbnh sau, kh\u1eb3ng \u0111\u1ecbnh n\u00e0o <strong>\u0111\u00fang<\/strong> ?<\/p>\n<p><strong>A. <\/strong>Hai \u0111\u01b0\u1eddng th\u1eb3ng c\u00f9ng vu\u00f4ng g\u00f3c v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng th\u1ee9 ba th\u00ec song song v\u1edbi nhau.<\/p>\n<p><strong>B. <\/strong>N\u1ebfu \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21090\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_377-9.png\" alt=\"IMG_377\" \/> vu\u00f4ng g\u00f3c v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21091\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_378-8.png\" alt=\"IMG_378\" \/> v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21092\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_379-8.png\" alt=\"IMG_379\" \/> vu\u00f4ng g\u00f3c v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21093\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_380-8.png\" alt=\"IMG_380\" \/> th\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21094\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_381-8.png\" alt=\"IMG_381\" \/> vu\u00f4ng g\u00f3c v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21095\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_382-8.png\" alt=\"IMG_382\" \/> .<\/p>\n<p><strong>C. <\/strong>Cho hai \u0111\u01b0\u1eddng th\u1eb3ng ph\u00e2n bi\u1ec7t <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21096\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_383-8.png\" alt=\"IMG_383\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21097\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_384-8.png\" alt=\"IMG_384\" \/> . N\u1ebfu \u0111\u01b0\u1eddng th\u1eb3ng c vu\u00f4ng g\u00f3c v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21098\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_385-8.png\" alt=\"IMG_385\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21099\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_386-8.png\" alt=\"IMG_386\" \/> th\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21100\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_387-7.png\" alt=\"IMG_387\" \/> , <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21101\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_388-5.png\" alt=\"IMG_388\" \/> , <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21102\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_389-4.png\" alt=\"IMG_389\" \/> kh\u00f4ng \u0111\u1ed3ng ph\u1eb3ng.<\/p>\n<p><strong>D. <\/strong>Cho hai \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21103\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_390-5.png\" alt=\"IMG_390\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21104\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_391-5.png\" alt=\"IMG_391\" \/> song song, n\u1ebfu <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21105\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_392-6.png\" alt=\"IMG_392\" \/> vu\u00f4ng g\u00f3c v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21106\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_393-6.png\" alt=\"IMG_393\" \/> th\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"24\" class=\"wp-image-21107\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_394-6.png\" alt=\"IMG_394\" \/> c\u0169ng vu\u00f4ng g\u00f3c v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"19\" class=\"wp-image-21108\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_395-6.png\" alt=\"IMG_395\" \/> .<\/p>\n<p><strong><em>H\u01b0\u1edbng d\u1eabn gi\u1ea3i:<\/em><\/strong><\/p>\n<p>Theo nh\u1eadn x\u00e9t ph\u1ea7n hai \u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c trong SGK th\u00ec \u0111\u00e1p \u00e1n D \u0111\u00fang.<\/p>\n<p><strong>C\u00e2u 8:<\/strong> M\u1ec7nh \u0111\u1ec1 n\u00e0o sau \u0111\u00e2y l\u00e0 <strong>\u0111\u00fang<\/strong>?<\/p>\n<p><strong>A. <\/strong>M\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c v\u1edbi m\u1ed9t trong hai \u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c th\u00ec song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng c\u00f2n l\u1ea1i.<\/p>\n<p><strong>B. <\/strong>Hai \u0111\u01b0\u1eddng th\u1eb3ng c\u00f9ng vu\u00f4ng g\u00f3c v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng th\u00ec song song v\u1edbi nhau.<\/p>\n<p><strong>C. <\/strong>Hai \u0111\u01b0\u1eddng th\u1eb3ng c\u00f9ng vu\u00f4ng g\u00f3c v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng th\u00ec vu\u00f4ng g\u00f3c v\u1edbi nhau.<\/p>\n<p><strong>D. <\/strong>M\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c v\u1edbi m\u1ed9t trong hai \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec vu\u00f4ng g\u00f3c v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng kia.<\/p>\n<p><strong><em>H\u01b0\u1edbng d\u1eabn gi\u1ea3i:<\/em><\/strong><\/p>\n<p>Theo nh\u1eadn x\u00e9t ph\u1ea7n hai \u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c trong SGK th\u00ec \u0111\u00e1p \u00e1n D \u0111\u00fang.<\/p>\n<p><strong>C\u00e2u 9:<\/strong> Trong c\u00e1c m\u1ec7nh \u0111\u1ec1 sau \u0111\u00e2y, m\u1ec7nh \u0111\u1ec1 n\u00e0o \u0111\u00fang?<\/p>\n<p><strong>A. <\/strong>Hai \u0111\u01b0\u1eddng th\u1eb3ng c\u00f9ng vu\u00f4ng g\u00f3c v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng th\u00ec song song v\u1edbi nhau.<\/p>\n<p><strong>B. <\/strong>M\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c v\u1edbi m\u1ed9t trong hai \u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c v\u1edbi nhau th\u00ec song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng c\u00f2n l\u1ea1i.<\/p>\n<p><strong>C. <\/strong>Hai \u0111\u01b0\u1eddng th\u1eb3ng c\u00f9ng vu\u00f4ng g\u00f3c v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng th\u00ec vu\u00f4ng g\u00f3c v\u1edbi nhau.<\/p>\n<p><strong>D. <\/strong>M\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c v\u1edbi m\u1ed9t trong hai \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec vu\u00f4ng g\u00f3c v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng kia.<\/p>\n<p><strong><em>H\u01b0\u1edbng d\u1eabn gi\u1ea3i:<\/em><\/strong><\/p>\n<p>Theo nh\u1eadn x\u00e9t ph\u1ea7n hai \u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c trong SGK th\u00ec \u0111\u00e1p \u00e1n D \u0111\u00fang.<\/p>\n<p><strong>C\u00e2u 10:<\/strong> Trong c\u00e1c m\u1ec7nh \u0111\u1ec1 sau \u0111\u00e2y, m\u1ec7nh \u0111\u1ec1 n\u00e0o \u0111\u00fang?<\/p>\n<p><strong> A. <\/strong>Cho hai \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"36\" height=\"27\" class=\"wp-image-21109\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_396-6.png\" alt=\"IMG_396\" \/> song song v\u1edbi nhau. M\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" class=\"wp-image-21110\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_397-6.png\" alt=\"IMG_397\" \/> vu\u00f4ng g\u00f3c v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" class=\"wp-image-21111\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_398-6.png\" alt=\"IMG_398\" \/> th\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" class=\"wp-image-21112\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_399-6.png\" alt=\"IMG_399\" \/> vu\u00f4ng g\u00f3c v\u1edbi m\u1ecdi \u0111\u01b0\u1eddng th\u1eb3ng n\u1eb1m trong m\u1eb7t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"50\" height=\"36\" class=\"wp-image-21113\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_400-6.png\" alt=\"IMG_400\" \/><\/p>\n<p><strong> B. <\/strong>Cho ba \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"60\" height=\"27\" class=\"wp-image-21114\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_401-6.png\" alt=\"IMG_401\" \/> vu\u00f4ng g\u00f3c v\u1edbi nhau t\u1eebng \u0111\u00f4i m\u1ed9t. N\u1ebfu c\u00f3 m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"22\" class=\"wp-image-21115\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_402-6.png\" alt=\"IMG_402\" \/> vu\u00f4ng g\u00f3c v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" class=\"wp-image-21116\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_403-6.png\" alt=\"IMG_403\" \/> th\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"22\" class=\"wp-image-21117\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_404-6.png\" alt=\"IMG_404\" \/> song song v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"22\" class=\"wp-image-21118\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_405-6.png\" alt=\"IMG_405\" \/> ho\u1eb7c <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" class=\"wp-image-21119\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_406-6.png\" alt=\"IMG_406\" \/> .<\/p>\n<p><strong> C. <\/strong>N\u1ebfu \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" class=\"wp-image-21120\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_407-6.png\" alt=\"IMG_407\" \/> vu\u00f4ng g\u00f3c v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"22\" class=\"wp-image-21121\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_408-6.png\" alt=\"IMG_408\" \/> v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"22\" class=\"wp-image-21122\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_409-6.png\" alt=\"IMG_409\" \/> vu\u00f4ng g\u00f3c v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" class=\"wp-image-21123\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_410-6.png\" alt=\"IMG_410\" \/> th\u00ec \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" class=\"wp-image-21124\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_411-6.png\" alt=\"IMG_411\" \/> vu\u00f4ng g\u00f3c v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" class=\"wp-image-21125\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_412-6.png\" alt=\"IMG_412\" \/> .<\/p>\n<p><strong> D. <\/strong>N\u1ebfu \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" class=\"wp-image-21126\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_413-6.png\" alt=\"IMG_413\" \/> vu\u00f4ng g\u00f3c v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"22\" class=\"wp-image-21127\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_414-6.png\" alt=\"IMG_414\" \/> v\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"22\" class=\"wp-image-21128\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_415-6.png\" alt=\"IMG_415\" \/> song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" class=\"wp-image-21129\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_416-6.png\" alt=\"IMG_416\" \/> th\u00ec \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" class=\"wp-image-21130\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_417-6.png\" alt=\"IMG_417\" \/> vu\u00f4ng g\u00f3c v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" class=\"wp-image-21131\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_418-6.png\" alt=\"IMG_418\" \/> .<\/p>\n<p><strong><em>H\u01b0\u1edbng d\u1eabn gi\u1ea3i:<\/em><\/strong><\/p>\n<p><strong> Ch\u1ecdn D. <\/strong>Theo \u0111\u1ecbnh l\u00fd-sgk<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A \u2013 L\u00dd THUY\u1ebeT T\u00d3M T\u1eaeT 1. Vect\u01a1 ch\u1ec9 ph\u01b0\u01a1ng c\u1ee7a \u0111\u01b0\u1eddng th\u1eb3ng: l\u00e0 VTCP c\u1ee7a d n\u1ebfu gi\u00e1 c\u1ee7a song song ho\u1eb7c tr\u00f9ng v\u1edbi d. 2. G\u00f3c gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng: \u00b7 a\u00a2\/\/a, b\u00a2\/\/b \u00de \u00b7 Gi\u1ea3 s\u1eed l\u00e0 VTCP c\u1ee7a a, l\u00e0 VTCP c\u1ee7a b, . Khi \u0111\u00f3: \u00b7 N\u1ebfu a\/\/b ho\u1eb7c a [&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-20968","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\/20968","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=20968"}],"version-history":[{"count":1,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/20968\/revisions"}],"predecessor-version":[{"id":21132,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/20968\/revisions\/21132"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=20968"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=20968"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=20968"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}