Trong giai \u0111o\u1ea1n \u00f4n thi n\u01b0\u1edbc r\u00fat, c\u00e1c em h\u1ecdc sinh c\u1ea7n nh\u1ea5t l\u00e0 nh\u1eefng ki\u1ebfn th\u1ee9c t\u1ed5ng h\u1ee3p, b\u00e1m s\u00e1t ch\u01b0\u01a1ng tr\u00ecnh gi\u1ea3ng d\u1ea1y trong s\u00e1ch gi\u00e1o khoa. Nh\u1eefng b\u1ed9 c\u00f4ng th\u1ee9c s\u1ebd gi\u00fap c\u00e1c em h\u00ecnh dung \u0111\u01b0\u1ee3c t\u1ea5t c\u1ea3 nh\u1eefng g\u00ec \u0111\u00e3 \u0111\u01b0\u1ee3c h\u1ecdc tr\u00ean l\u1edbp, v\u1eeba thu\u1eadn ti\u1ec7n \u00f4n thi cu\u1ed1i c\u1ea5p v\u1eeba ph\u1ee5c v\u1ee5 thi THPT.<\/p>\n

Khi gi\u1ea3i c\u00e1c b\u00e0i t\u1eadp h\u00ecnh h\u1ecdc kh\u00f4ng gian, ngo\u00e0i vi\u1ec7c r\u00e8n luy\u1ec7n c\u00e1c k\u1ef9 n\u0103ng ph\u00e2n t\u00edch \u0111\u1ec1 b\u00e0i, k\u1ef9 n\u0103ng v\u1ebd h\u00ecnh kh\u00f4ng gian, tr\u00ed t\u01b0\u1edfng t\u01b0\u1ee3ng \u0111a chi\u1ec1u, c\u00e1c em kh\u00f4ng ch\u1ec9 c\u1ea7n n\u1eafm ch\u1eafc ki\u1ebfn th\u1ee9c l\u1edbp 12 m\u00e0 c\u00f2n ph\u1ea3i v\u1eadn d\u1ee5ng nhu\u1ea7n nhuy\u1ec5n ki\u1ebfn th\u1ee9c l\u1edbp d\u01b0\u1edbi.<\/p>\n

H\u00ecnh kh\u00f4ng gian \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 l\u00e0 ph\u1ea7n kh\u00f3 trong \u0111\u1ec1 thi, nhi\u1ec1u em c\u00f2n l\u00fang t\u00fang khi gi\u1ea3i b\u00e0i do k\u1ef9 n\u0103ng y\u1ebfu, h\u1ed5ng ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n, th\u1eadm ch\u00ed c\u00f3 em kh\u00f4ng v\u1ebd \u0111\u01b0\u1ee3c nh\u1eefng h\u00ecnh kh\u00f4ng gian \u0111\u01a1n gi\u1ea3n. B\u1ed9 ki\u1ebfn th\u1ee9c h\u00ecnh kh\u00f4ng gian d\u01b0\u1edbi \u0111\u00e2y s\u1ebd gi\u00fap c\u00e1c em n\u1eafm \u0111\u01b0\u1ee3c ki\u1ebfn th\u1ee9c n\u1ec1n t\u1ea3ng, ph\u00e2n lo\u1ea1i \u0111\u01b0\u1ee3c n\u1ed9i dung ki\u1ebfn th\u1ee9c, t\u1ed5ng h\u1ee3p c\u00e1c c\u00f4ng th\u1ee9c, \u0111\u1ecbnh l\u00fd, \u0111\u1ecbnh ngh\u0129a, kh\u00e1i ni\u1ec7m c\u1ea7n nh\u1edb.<\/p>\n

C\u00e1c em ghi nh\u1edb ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n, ch\u1ecbu kh\u00f3 luy\u1ec7n \u0111\u1ec1 v\u00e0 r\u00e8n k\u1ef9 n\u0103ng ph\u00e2n t\u00edch, v\u1ebd h\u00ecnh \u0111\u1ec3 c\u00f3 th\u1ec3 v\u1eadn d\u1ee5ng nhu\u1ea7n nhuy\u1ec5n trong k\u1ef3 thi s\u1eafp t\u1edbi. V\u1ec1 c\u01a1 b\u1ea3n c\u1ea5u tr\u00fac \u0111\u1ec1 thi v\u1eabn gi\u1eef nguy\u00ean nh\u01b0 n\u0103m ngo\u00e1i v\u00e0 t\u0103ng c\u01b0\u1eddng nhi\u1ec1u c\u00e2u h\u1ecfi kh\u00f3, c\u00e2u h\u1ecfi m\u1edf \u0111\u00f2i h\u1ecfi c\u00e1c em ph\u1ea3i bi\u1ebft s\u1eed d\u1ee5ng v\u00e0 k\u1ebft h\u1ee3p nhi\u1ec1u ki\u1ebfn th\u1ee9c, c\u00f4ng th\u1ee9c khi l\u00e0m b\u00e0i. H\u00ecnh th\u1ee9c thi m\u00f4n to\u00e1n v\u1eabn l\u00e0 t\u1ef1 lu\u1eadn, ki\u1ebfn th\u1ee9c l\u1edbp 12 chi\u1ebfm 70%, ki\u1ebfn th\u1ee9c l\u1edbp d\u01b0\u1edbi chi\u1ebfm 30%.<\/p>\n

B\u1ed9 ki\u1ebfn th\u1ee9c bao g\u1ed3m c\u00e1c n\u1ed9i dung sau:<\/p>\n

Ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n h\u00ecnh h\u1ecdc l\u1edbp 10:<\/em><\/p>\n

\n
• H\u1ec7 th\u1ee9c l\u01b0\u1ee3ng trong tam gi\u00e1c vu\u00f4ng<\/li>\n
• H\u1ec7 th\u1ee9c l\u01b0\u1ee3ng trong tam gi\u00e1c th\u01b0\u1eddng<\/li>\n
• C\u00f4ng th\u1ee9c t\u00ednh di\u1ec7n t\u00edch<\/li>\n<\/ul>\n

  Ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n h\u00ecnh h\u1ecdc l\u1edbp 11:<\/em><\/p>\n

  \n
  • \u0110\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng song song<\/li>\n
  • Hai m\u1eb7t ph\u1eb3ng song song<\/li>\n
  • \u0110\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c v\u1edbi m\u1eb7t ph\u1eb3ng<\/li>\n
  • Hai m\u1eb7t ph\u1eb3ng vu\u00f4ng g\u00f3c<\/li>\n
  • Kho\u1ea3ng c\u00e1ch<\/li>\n
  • G\u00f3c<\/li>\n<\/ul>\n

    Ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n h\u00ecnh h\u1ecdc l\u1edbp 12:<\/em><\/p>\n

    \n
    • C\u00f4ng th\u1ee9c t\u00ednh th\u1ec3 t\u00edch kh\u1ed1i \u0111a di\u1ec7n<\/li>\n<\/ul>\n

      H\u00ecnh kh\u00f4ng gian l\u1edbp 10<\/strong><\/p>\n

      \n
      1. H\u1ec7 th\u1ee9c l\u01b0\u1ee3ng trong tam gi\u00e1c<\/strong><\/li>\n<\/ol>\n

         <\/a><\/p>\n

         2. C\u00f4ng th\u1ee9c t\u00ednh di\u1ec7n t\u00edch<\/strong><\/p>\n

         <\/a><\/p>\n

         H\u00ecnh kh\u00f4ng gian l\u1edbp 11<\/strong><\/p>\n

         \n
         1. Quan h\u1ec7 song song<\/strong><\/li>\n<\/ol>\n

            <\/a><\/p>\n

            <\/a><\/p>\n

            2. Quan h\u1ec7 vu\u00f4ng g\u00f3c<\/strong><\/p>\n

            <\/a><\/p>\n

            <\/a><\/p>\n

            3. Kho\u1ea3ng c\u00e1ch<\/strong><\/p>\n

            <\/a><\/p>\n

            4. G\u00f3c<\/strong><\/p>\n

            <\/a><\/p>\n

            H\u00ecnh kh\u00f4ng gian l\u1edbp 12<\/strong><\/p>\n

            <\/a><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

            Trong giai \u0111o\u1ea1n \u00f4n thi n\u01b0\u1edbc r\u00fat, c\u00e1c em h\u1ecdc sinh c\u1ea7n nh\u1ea5t l\u00e0 nh\u1eefng ki\u1ebfn th\u1ee9c t\u1ed5ng h\u1ee3p, b\u00e1m s\u00e1t ch\u01b0\u01a1ng tr\u00ecnh gi\u1ea3ng d\u1ea1y trong s\u00e1ch gi\u00e1o khoa. Nh\u1eefng b\u1ed9 c\u00f4ng th\u1ee9c s\u1ebd gi\u00fap c\u00e1c em h\u00ecnh dung \u0111\u01b0\u1ee3c t\u1ea5t c\u1ea3 nh\u1eefng g\u00ec \u0111\u00e3 \u0111\u01b0\u1ee3c h\u1ecdc tr\u00ean l\u1edbp, v\u1eeba thu\u1eadn ti\u1ec7n \u00f4n thi cu\u1ed1i […]<\/p>\n","protected":false},"author":2,"featured_media":21396,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[157],"tags":[],"yoast_head":"\n