{"common":{"save":0,"post_id":"8034","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"8515","post_id":"8034","mon_id":"1159278","chapter_id":"1159329","question":"<p>\u0110\u01b0\u1eddng th\u1eb3ng a và \u0111\u01b0\u1eddng tròn (O ; R) ti\u1ebfp xúc v\u1edbi nhau khi:<\/p>","options":["<strong>A.<\/strong> d < R","<strong>B.<\/strong> d = R","<strong>C.<\/strong> d > R","<strong>D.<\/strong> d <span class=\"math-tex\">$\\ge$<\/span> R"],"correct":"2","level":"1","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> d = R.<\/span><\/p><p>\u0110\u01b0\u1eddng th\u1eb3ng a và \u0111\u01b0\u1eddng tròn (O ; R) ti\u1ebfp xúc v\u1edbi nhau khi: d = R.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"127","test":"0","date":"2024-11-13 08:46:04","option_type":"math","len":0},{"id":"8517","post_id":"8034","mon_id":"1159278","chapter_id":"1159329","question":"<p>Cho \u0111\u01b0\u1eddng th\u1eb3ng a và \u0111i\u1ec3m O cách a m\u1ed9t kho\u1ea3ng b\u1eb1ng 4 cm. Khi \u0111ó a và<br \/>(O ; 4 cm)<\/p>","options":["<strong>A.<\/strong> ti\u1ebfp xúc v\u1edbi nhau t\u1ea1i m\u1ed9t \u0111i\u1ec3m duy nh\u1ea5t.","<strong>B.<\/strong> c\u1eaft nhau t\u1ea1i hai \u0111i\u1ec3m phân bi\u1ec7t.","<strong>C.<\/strong> không giao nhau.","<strong>D.<\/strong> c\u1eaft nhau t\u1ea1i ba \u0111i\u1ec3m phân bi\u1ec7t."],"correct":"1","level":"1","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>A.<\/strong> ti\u1ebfp xúc v\u1edbi nhau t\u1ea1i m\u1ed9t \u0111i\u1ec3m duy nh\u1ea5t.<\/span><\/p><p>Vì d = R (4 cm = 4 cm) nên a và (O ; 4 cm) ti\u1ebfp xúc v\u1edbi nhau t\u1ea1i m\u1ed9t \u0111i\u1ec3m duy nh\u1ea5t.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"127","test":"0","date":"2024-11-13 08:50:34","option_type":"txt","len":2},{"id":"8518","post_id":"8034","mon_id":"1159278","chapter_id":"1159329","question":"<p>Cho \u0111\u01b0\u1eddng th\u1eb3ng a và \u0111i\u1ec3m O cách a m\u1ed9t kho\u1ea3ng b\u1eb1ng 5 cm. Khi \u0111ó a và<br \/>(O ; 3 cm)<\/p>","options":["<strong>A.<\/strong> ti\u1ebfp xúc v\u1edbi nhau t\u1ea1i m\u1ed9t \u0111i\u1ec3m duy nh\u1ea5t.","<strong>B.<\/strong> c\u1eaft nhau t\u1ea1i hai \u0111i\u1ec3m phân bi\u1ec7t.","<strong>C.<\/strong> không giao nhau.","<strong>D.<\/strong> c\u1eaft nhau t\u1ea1i ba \u0111i\u1ec3m phân bi\u1ec7t."],"correct":"3","level":"1","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>C.<\/strong> không giao nhau.<\/span><\/p><p>Vì d > R (5 cm > 3 cm) nên a và (O ; 3 cm) không giao nhau.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"127","test":"0","date":"2024-11-13 08:53:38","option_type":"txt","len":2}]}
