{"common":{"save":0,"post_id":"6664","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"6814","post_id":"6664","mon_id":"1158921","chapter_id":"1158939","question":"<p>Cho \u25b3ABC<span class=\"math-tex\">$\\backsim$<\/span>\u25b3DEF theo t\u1ec9 s\u1ed1 3. Câu nào <strong>\u0111úng<\/strong>?<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{AB}{DE}=\\dfrac{1}{3}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{AB}{DE}=3$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{BC}{DE}=3$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{AC}{DF}=\\dfrac{1}{3}$<\/span>"],"correct":"2","level":"2","hint":"","answer":"<p>Vì \u25b3ABC<span class=\"math-tex\">$\\backsim$<\/span>\u25b3DEF theo t\u1ec9 s\u1ed1 3 nên <span class=\"math-tex\">$\\dfrac{AB}{DE}=\\dfrac{AC}{DF}=\\dfrac{BC}{EF}=3$<\/span> .<\/p><p>Suy ra câu \u0111úng là <span style=\"color:#16a085;\"><strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{AB}{DE}=3$<\/span> .<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-09-03 06:35:27","option_type":"math","len":0},{"id":"6815","post_id":"6664","mon_id":"1158921","chapter_id":"1158939","question":"<p>Cho \u25b3ABC<span class=\"math-tex\">$\\backsim$<\/span>\u25b3DEF theo t\u1ec9 s\u1ed1 3. Câu nào <strong>\u0111úng<\/strong>?<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{AB}{DE}=\\dfrac{1}{3}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{EF}{BC}=3$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{BC}{DE}=3$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{DF}{AC}=\\dfrac{1}{3}$<\/span>"],"correct":"4","level":"2","hint":"","answer":"<p>Vì \u25b3ABC<span class=\"math-tex\">$\\backsim$<\/span>\u25b3DEF theo t\u1ec9 s\u1ed1 3 nên <span class=\"math-tex\">$\\dfrac{AB}{DE}=\\dfrac{AC}{DF}=\\dfrac{BC}{EF}=3$<\/span> .<\/p><p>⇒ <span class=\"math-tex\">$\\dfrac{AC}{DF}=3$<\/span> ⇒ <span class=\"math-tex\">$\\dfrac{DF}{AC}=\\dfrac{1}{3}$<\/span> .<\/p><p>Suy ra câu \u0111úng là <span style=\"color:#16a085;\"><strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{DF}{AC}=\\dfrac{1}{3}$<\/span>.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-09-03 06:37:32","option_type":"math","len":0},{"id":"6818","post_id":"6664","mon_id":"1158921","chapter_id":"1158939","question":"<p>Cho \u25b3ABC<span class=\"math-tex\">$\\backsim$<\/span>\u25b3MNP . Câu nào <strong>\u0111úng<\/strong>?<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{AB}{MN}=\\dfrac{BC}{MP}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{PM}{CB}=\\dfrac{MN}{AB}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{NP}{BC}=\\dfrac{MP}{AC}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{MN}{AB}=\\dfrac{BC}{NP}$<\/span>"],"correct":"3","level":"2","hint":"","answer":"<p>Vì \u25b3ABC<span class=\"math-tex\">$\\backsim$<\/span>\u25b3MNP nên <span class=\"math-tex\">$\\dfrac{AB}{MN}=\\dfrac{AC}{MP}=\\dfrac{BC}{NP}$<\/span> .<\/p><p>⇒ <span class=\"math-tex\">$\\dfrac{BC}{NP}=\\dfrac{AC}{MP}$<\/span> ⇒ <span class=\"math-tex\">$\\dfrac{NP}{BC}=\\dfrac{MP}{AC}$<\/span><\/p><p>Câu \u0111úng là <span style=\"color:#16a085;\"><strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{NP}{BC}=\\dfrac{MP}{AC}$<\/span> .<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-09-03 06:43:37","option_type":"math","len":0}]}
