{"id":979,"date":"2026-02-07T06:44:28","date_gmt":"2026-02-07T06:44:28","guid":{"rendered":"https:\/\/arttao.net\/?page_id=979"},"modified":"2026-02-07T17:39:06","modified_gmt":"2026-02-07T17:39:06","slug":"b2-2-hinh-vuong","status":"publish","type":"page","link":"https:\/\/arttao.net\/vi\/b2-2%e3%80%81%e6%ad%a3%e6%96%b9%e5%bd%a2\/","title":{"rendered":"B2-2, H\u00ecnh vu\u00f4ng"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"709\" src=\"https:\/\/arttao.net\/wp-content\/uploads\/2026\/02\/article04_1064x-1024x709.jpg\" alt=\"\" class=\"wp-image-981\" srcset=\"https:\/\/arttao.net\/wp-content\/uploads\/2026\/02\/article04_1064x-1024x709.jpg 1024w, https:\/\/arttao.net\/wp-content\/uploads\/2026\/02\/article04_1064x-600x416.jpg 600w, https:\/\/arttao.net\/wp-content\/uploads\/2026\/02\/article04_1064x-300x208.jpg 300w, https:\/\/arttao.net\/wp-content\/uploads\/2026\/02\/article04_1064x-768x532.jpg 768w, https:\/\/arttao.net\/wp-content\/uploads\/2026\/02\/article04_1064x.jpg 1064w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><br>2. H\u00ecnh vu\u00f4ng<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"480\" height=\"480\" src=\"https:\/\/arttao.net\/wp-content\/uploads\/2026\/02\/Penguin-Information-Sticker-by-Pudgy-Penguins.gif\" alt=\"\" class=\"wp-image-982\" style=\"width:69px;height:auto\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Trong h\u1ec7 th\u1ed1ng k\u00fd hi\u1ec7u h\u00ecnh h\u1ecdc c\u01a1 b\u1ea3n, h\u00ecnh vu\u00f4ng l\u00e0 m\u1ed9t h\u00ecnh d\u1ea1ng \u0111\u01b0\u1ee3c h\u1ee3p l\u00fd h\u00f3a cao v\u00e0 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u00f5 r\u00e0ng v\u1ec1 c\u1ea5u tr\u00fac. N\u00f3 bao g\u1ed3m b\u1ed1n \u0111\u01b0\u1eddng th\u1eb3ng c\u00f3 \u0111\u1ed9 d\u00e0i b\u1eb1ng nhau v\u00e0 b\u1ed1n g\u00f3c vu\u00f4ng, th\u1ec3 hi\u1ec7n t\u00ednh \u0111\u1ecbnh h\u01b0\u1edbng n\u1ed5i b\u1eadt, c\u1ea3m gi\u00e1c m\u1ea1nh m\u1ebd v\u1ec1 ranh gi\u1edbi v\u00e0 s\u1ef1 \u1ed5n \u0111\u1ecbnh. Kh\u00f4ng gi\u1ed1ng nh\u01b0 t\u00ednh li\u00ean t\u1ee5c v\u00e0 thi\u1ebfu t\u00ednh \u0111\u1ecbnh h\u01b0\u1edbng c\u1ee7a h\u00ecnh tr\u00f2n, h\u00ecnh vu\u00f4ng th\u1ec3 hi\u1ec7n m\u1ed9t tr\u1eadt t\u1ef1, \u0111\u1ecbnh ngh\u0129a v\u00e0 kh\u1ea3 n\u0103ng \u0111o l\u01b0\u1eddng r\u00f5 r\u00e0ng trong c\u1ea5u tr\u00fac c\u1ee7a n\u00f3, v\u00e0 nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m h\u00ecnh th\u1ee9c n\u00e0y tr\u1ef1c ti\u1ebfp t\u1ea1o n\u00ean n\u1ec1n t\u1ea3ng cho \u00fd ngh\u0129a bi\u1ec3u t\u01b0\u1ee3ng c\u1ee7a n\u00f3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1eeb g\u00f3c \u0111\u1ed9 h\u00ecnh h\u1ecdc, h\u00ecnh vu\u00f4ng l\u00e0 m\u1ed9t h\u00ecnh d\u1ea1ng r\u1ea5t &quot;d\u1ec5 ki\u1ec3m so\u00e1t&quot;. B\u1ed1n c\u1ea1nh c\u1ee7a n\u00f3 x\u00e1c \u0111\u1ecbnh r\u00f5 r\u00e0ng b\u00ean trong v\u00e0 b\u00ean ngo\u00e0i, v\u00e0 c\u00e1c g\u00f3c vu\u00f4ng lo\u1ea1i b\u1ecf s\u1ef1 kh\u00f4ng ch\u1eafc ch\u1eafn v\u1ec1 \u0111\u1ed9 nghi\u00eang v\u00e0 \u0111\u1ed9 l\u1ec7ch, \u0111\u1eb7t to\u00e0n b\u1ed9 h\u00ecnh v\u00e0o tr\u1ea1ng th\u00e1i c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n v\u00e0 l\u1eb7p l\u1ea1i. Thu\u1ed9c t\u00ednh c\u1ea5u tr\u00fac n\u00e0y th\u01b0\u1eddng li\u00ean k\u1ebft h\u00ecnh vu\u00f4ng m\u1ed9t c\u00e1ch t\u01b0\u1ee3ng tr\u01b0ng v\u1edbi s\u1ef1 \u1ed5n \u0111\u1ecbnh, tr\u1eadt t\u1ef1 v\u00e0 ch\u1eafc ch\u1eafn. Tuy nhi\u00ean, bi\u1ec3u t\u01b0\u1ee3ng n\u00e0y kh\u00f4ng b\u1eaft ngu\u1ed3n t\u1eeb c\u00e1c \u1ea9n d\u1ee5 v\u0103n h\u00f3a, m\u00e0 t\u1eeb ch\u00ednh c\u1ea5u t\u1ea1o h\u00ecnh h\u1ecdc c\u1ee7a n\u00f3. S\u1ef1 \u1ed5n \u0111\u1ecbnh c\u1ee7a h\u00ecnh vu\u00f4ng kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ef1 c\u00e2n b\u1eb1ng c\u1ea3m gi\u00e1c, m\u00e0 l\u00e0 s\u1ef1 c\u00e2n b\u1eb1ng logic.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"480\" height=\"480\" src=\"https:\/\/arttao.net\/wp-content\/uploads\/2026\/02\/Penguin-Information-Sticker-by-Pudgy-Penguins.gif\" alt=\"\" class=\"wp-image-982\" style=\"width:69px;height:auto\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t kh\u00eda c\u1ea1nh bi\u1ec3u t\u01b0\u1ee3ng quan tr\u1ecdng kh\u00e1c c\u1ee7a h\u00ecnh vu\u00f4ng n\u1eb1m \u1edf t\u00ednh nh\u00e2n t\u1ea1o c\u1ee7a n\u00f3. So v\u1edbi c\u00e1c \u0111\u01b0\u1eddng cong v\u00e0 h\u00ecnh d\u1ea1ng b\u1ea5t quy t\u1eafc ph\u1ed5 bi\u1ebfn h\u01a1n trong t\u1ef1 nhi\u00ean, h\u00ecnh vu\u00f4ng l\u00e0 m\u1ed9t c\u1ea5u tr\u00fac \u0111i\u1ec3n h\u00ecnh do con ng\u01b0\u1eddi t\u1ea1o ra. N\u00f3 t\u1ed3n t\u1ea1i d\u1ef1a tr\u00ean c\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng, g\u00f3c v\u00e0 h\u1ec7 th\u1ed1ng \u0111o l\u01b0\u1eddng, v\u00e0 do \u0111\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c coi l\u00e0 bi\u1ec3u t\u01b0\u1ee3ng c\u1ee7a t\u00ednh h\u1ee3p l\u00fd, t\u00ednh quy lu\u1eadt v\u00e0 c\u00e1c c\u1ea5u tr\u00fac \u0111\u01b0\u1ee3c th\u1ec3 ch\u1ebf h\u00f3a. Trong h\u1ec7 th\u1ed1ng c\u00e1c k\u00fd hi\u1ec7u h\u00ecnh h\u1ecdc, h\u00ecnh vu\u00f4ng th\u01b0\u1eddng \u0111\u00f3ng vai tr\u00f2 l\u00e0 &quot;n\u1ec1n t\u1ea3ng c\u1ea5u tr\u00fac&quot;, cung c\u1ea5p m\u1ed9t khu\u00f4n kh\u1ed5 \u1ed5n \u0111\u1ecbnh cho c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p h\u01a1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 m\u1eb7t kh\u00f4ng gian, h\u00ecnh vu\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng r\u00f5 r\u00e0ng trong vi\u1ec7c \u0111\u1ecbnh h\u01b0\u1edbng. Tr\u00ean v\u00e0 d\u01b0\u1edbi, tr\u00e1i v\u00e0 ph\u1ea3i, trong v\u00e0 ngo\u00e0i \u0111\u01b0\u1ee3c ph\u00e2n bi\u1ec7t r\u00f5 r\u00e0ng trong h\u00ecnh vu\u00f4ng, v\u00e0 t\u00ednh \u0111\u1ecbnh h\u01b0\u1edbng n\u00e0y li\u00ean k\u1ebft n\u00f3 m\u1ed9t c\u00e1ch t\u01b0\u1ee3ng tr\u01b0ng v\u1edbi kh\u00f4ng gian c\u00f3 tr\u1eadt t\u1ef1 v\u00e0 c\u00e1c c\u1ea5u tr\u00fac chu\u1ea9n m\u1ef1c. H\u00ecnh vu\u00f4ng kh\u00f4ng ch\u1ec9 \u0111\u1ecbnh ngh\u0129a kh\u00f4ng gian m\u00e0 c\u00f2n quy\u1ebft \u0111\u1ecbnh c\u00e1ch th\u1ee9c hi\u1ec3u v\u1ec1 kh\u00f4ng gian. \u0110\u1eb7c \u0111i\u1ec3m n\u00e0y khi\u1ebfn n\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ngh\u1ec7 thu\u1eadt tr\u1eebu t\u01b0\u1ee3ng \u0111\u1ec3 th\u1ec3 hi\u1ec7n c\u00e1c h\u1ec7 th\u1ed1ng, khu\u00f4n kh\u1ed5 ho\u1eb7c \u0111i\u1ec1u ki\u1ec7n c\u1ea5u tr\u00fac, h\u01a1n l\u00e0 c\u1ea3m x\u00fac ho\u1eb7c c\u00e1c qu\u00e1 tr\u00ecnh linh ho\u1ea1t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00ecnh vu\u00f4ng c\u0169ng s\u1edf h\u1eefu ti\u1ec1m n\u0103ng m\u00f4 \u0111un \u0111\u00e1ng k\u1ec3. \u0110\u1ed9 d\u00e0i c\u00e1c c\u1ea1nh b\u1eb1ng nhau v\u00e0 c\u00e1c g\u00f3c \u0111\u1ed3ng nh\u1ea5t khi\u1ebfn n\u00f3 c\u1ef1c k\u1ef3 d\u1ec5 l\u1eb7p l\u1ea1i, gh\u00e9p n\u1ed1i v\u00e0 m\u1edf r\u1ed9ng. V\u1ec1 m\u1eb7t bi\u1ec3u t\u01b0\u1ee3ng, kh\u1ea3 n\u0103ng t\u00e1i t\u1ea1o n\u00e0y th\u01b0\u1eddng li\u00ean k\u1ebft h\u00ecnh vu\u00f4ng v\u1edbi c\u00e1c th\u1ec3 ch\u1ebf, h\u1ec7 th\u1ed1ng v\u00e0 s\u1ef1 v\u1eadn h\u00e0nh c\u1ee7a c\u00e1c quy t\u1eafc. M\u1ed9t h\u00ecnh vu\u00f4ng \u0111\u01a1n l\u1ebb kh\u00f4ng quan tr\u1ecdng; \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 n\u00f3 c\u00f3 th\u1ec3 t\u1ea1o th\u00e0nh c\u00e1c l\u01b0\u1edbi, m\u1ea3ng v\u00e0 c\u00e1c tr\u01b0\u1eddng c\u1ea5u tr\u00fac. Do \u0111\u00f3, t\u00ednh bi\u1ec3u t\u01b0\u1ee3ng c\u1ee7a h\u00ecnh vu\u00f4ng th\u01b0\u1eddng v\u01b0\u1ee3t ra ngo\u00e0i h\u00ecnh th\u1ee9c ri\u00eang l\u1ebb c\u1ee7a n\u00f3, h\u01b0\u1edbng \u0111\u1ebfn to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"480\" height=\"480\" src=\"https:\/\/arttao.net\/wp-content\/uploads\/2026\/02\/Penguin-Information-Sticker-by-Pudgy-Penguins.gif\" alt=\"\" class=\"wp-image-982\" style=\"width:70px;height:auto\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, \u00fd ngh\u0129a bi\u1ec3u t\u01b0\u1ee3ng c\u1ee7a h\u00ecnh vu\u00f4ng kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng ch\u1ec9 ra s\u1ef1 \u1ed5n \u0111\u1ecbnh t\u0129nh t\u1ea1i. Nh\u1eefng c\u0103ng th\u1eb3ng v\u1ec1 c\u1ea5u tr\u00fac c\u1ee7a n\u00f3 xu\u1ea5t hi\u1ec7n khi n\u00f3 b\u1ecb xoay, d\u1ecbch chuy\u1ec3n, chia nh\u1ecf ho\u1eb7c b\u1ecb ph\u00e1 v\u1ee1. M\u1ed9t h\u00ecnh vu\u00f4ng nghi\u00eang l\u00e0m suy y\u1ebfu c\u1ea3m gi\u00e1c tr\u1eadt t\u1ef1 c\u1ee7a n\u00f3, trong khi m\u1ed9t h\u00ecnh vu\u00f4ng b\u1ecb ph\u00e1 v\u1ee1 l\u1ea1i g\u00e2y ra s\u1ef1 b\u1ea5t \u1ed5n v\u00e0 xung \u0111\u1ed9t. \u0110i\u1ec1u n\u00e0y cho th\u1ea5y \u00fd ngh\u0129a bi\u1ec3u t\u01b0\u1ee3ng c\u1ee7a h\u00ecnh vu\u00f4ng kh\u00f4ng c\u1ed1 \u0111\u1ecbnh m\u00e0 ph\u1ee5 thu\u1ed9c v\u00e0o b\u1ed1i c\u1ea3nh quan h\u1ec7 c\u1ee7a n\u00f3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Do \u0111\u00f3, trong h\u1ec7 th\u1ed1ng k\u00fd hi\u1ec7u h\u00ecnh h\u1ecdc c\u01a1 b\u1ea3n, h\u00ecnh vu\u00f4ng kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 t\u1eeb \u0111\u1ed3ng ngh\u0129a v\u1edbi &quot;s\u1ef1 \u1ed5n \u0111\u1ecbnh&quot;, m\u00e0 c\u00f2n l\u00e0 h\u00ecnh d\u1ea1ng c\u1ed1t l\u00f5i t\u01b0\u1ee3ng tr\u01b0ng cho tr\u1eadt t\u1ef1 h\u1ee3p l\u00fd, c\u1ea5u tr\u00fac nh\u00e2n t\u1ea1o v\u00e0 ranh gi\u1edbi h\u1ec7 th\u1ed1ng. Th\u00f4ng qua c\u1ea5u tr\u00fac r\u00f5 r\u00e0ng v\u00e0 c\u00f3 th\u1ec3 \u0111o l\u01b0\u1eddng \u0111\u01b0\u1ee3c, n\u00f3 h\u01b0\u1edbng d\u1eabn ngh\u1ec7 thu\u1eadt tr\u1eebu t\u01b0\u1ee3ng \u0111\u1ebfn c\u00e1c quy t\u1eafc, khu\u00f4n kh\u1ed5 v\u00e0 bi\u1ec3u \u0111\u1ea1t ng\u00f4n ng\u1eef, tr\u1edf th\u00e0nh m\u1ed9t n\u1ec1n t\u1ea3ng h\u1ee3p l\u00fd kh\u00f4ng th\u1ec3 thi\u1ebfu trong h\u1ec7 th\u1ed1ng k\u00fd hi\u1ec7u h\u00ecnh h\u1ecdc.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"450\" src=\"https:\/\/arttao.net\/wp-content\/uploads\/2026\/02\/art75.gif\" alt=\"\" class=\"wp-image-1008\" style=\"width:68px;height:auto\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n<p>\r\n        <div class=\"arttao-tts-wrap\" data-selector=\".entry-content p, .entry-content li, .arttao-tts-source-content p\" style=\"margin:12px 0;\">\r\n          <audio id=\"arttao-tts-audio\" controls preload=\"none\" style=\"width:100%; max-width:800px;\"><\/audio>\r\n          <div id=\"arttao-tts-status\" style=\"font-size:13px; margin-top:6px; color:#F7FFFF;\"><\/div>\r\n        <\/div>\r\n        <details class=\"arttao-tts-accordion\" style=\"margin: 20px 0;\">\r\n            <summary>B\u00e0i h\u1ecdc B2-2: Ph\u00e2n t\u00edch k\u00fd hi\u1ec7u c\u00e1c h\u00ecnh h\u1ecdc c\u01a1 b\u1ea3n - H\u00ecnh vu\u00f4ng (Nh\u1ea5p chu\u1ed9t \u0111\u1ec3 nghe b\u00e0i \u0111\u1ecdc)<\/summary>\r\n            <div class=\"arttao-tts-source-content\">\r\n                <\/p>\n<p>Trong h\u1ec7 th\u1ed1ng k\u00fd hi\u1ec7u h\u00ecnh h\u1ecdc c\u01a1 b\u1ea3n, h\u00ecnh vu\u00f4ng l\u00e0 m\u1ed9t h\u00ecnh d\u1ea1ng \u0111\u01b0\u1ee3c h\u1ee3p l\u00fd h\u00f3a cao v\u00e0 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u00f5 r\u00e0ng v\u1ec1 c\u1ea5u tr\u00fac. N\u00f3 bao g\u1ed3m b\u1ed1n \u0111\u01b0\u1eddng th\u1eb3ng c\u00f3 \u0111\u1ed9 d\u00e0i b\u1eb1ng nhau v\u00e0 b\u1ed1n g\u00f3c vu\u00f4ng, th\u1ec3 hi\u1ec7n t\u00ednh \u0111\u1ecbnh h\u01b0\u1edbng n\u1ed5i b\u1eadt, c\u1ea3m gi\u00e1c m\u1ea1nh m\u1ebd v\u1ec1 ranh gi\u1edbi v\u00e0 s\u1ef1 \u1ed5n \u0111\u1ecbnh. Kh\u00f4ng gi\u1ed1ng nh\u01b0 t\u00ednh li\u00ean t\u1ee5c v\u00e0 thi\u1ebfu \u0111\u1ecbnh h\u01b0\u1edbng c\u1ee7a h\u00ecnh tr\u00f2n, h\u00ecnh vu\u00f4ng th\u1ec3 hi\u1ec7n m\u1ed9t tr\u1eadt t\u1ef1, \u0111\u1ecbnh ngh\u0129a v\u00e0 kh\u1ea3 n\u0103ng \u0111o l\u01b0\u1eddng r\u00f5 r\u00e0ng trong c\u1ea5u tr\u00fac c\u1ee7a n\u00f3; nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m h\u00ecnh th\u1ee9c n\u00e0y tr\u1ef1c ti\u1ebfp \u0111\u1eb7t n\u1ec1n t\u1ea3ng cho t\u00ednh bi\u1ec3u t\u01b0\u1ee3ng c\u1ee7a n\u00f3. V\u1ec1 m\u1eb7t h\u00ecnh h\u1ecdc, h\u00ecnh vu\u00f4ng l\u00e0 m\u1ed9t h\u00ecnh d\u1ea1ng c\u00f3 t\u00ednh &quot;ki\u1ec3m so\u00e1t&quot; cao. B\u1ed1n \u0111\u01b0\u1eddng bi\u00ean x\u00e1c \u0111\u1ecbnh r\u00f5 r\u00e0ng b\u00ean trong v\u00e0 b\u00ean ngo\u00e0i, v\u00e0 c\u00e1c g\u00f3c vu\u00f4ng lo\u1ea1i b\u1ecf c\u00e1c \u0111\u1ed9 nghi\u00eang v\u00e0 \u0111\u1ed9 l\u1ec7ch kh\u00f4ng ch\u1eafc ch\u1eafn, \u0111\u1eb7t to\u00e0n b\u1ed9 h\u00ecnh d\u1ea1ng v\u00e0o m\u1ed9t tr\u1ea1ng th\u00e1i c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n v\u00e0 l\u1eb7p l\u1ea1i. Thu\u1ed9c t\u00ednh c\u1ea5u tr\u00fac n\u00e0y th\u01b0\u1eddng li\u00ean k\u1ebft h\u00ecnh vu\u00f4ng v\u1edbi s\u1ef1 \u1ed5n \u0111\u1ecbnh, tr\u1eadt t\u1ef1 v\u00e0 s\u1ef1 ch\u1eafc ch\u1eafn \u1edf c\u1ea5p \u0111\u1ed9 bi\u1ec3u t\u01b0\u1ee3ng. Tuy nhi\u00ean, t\u00ednh bi\u1ec3u t\u01b0\u1ee3ng n\u00e0y kh\u00f4ng b\u1eaft ngu\u1ed3n t\u1eeb c\u00e1c \u1ea9n d\u1ee5 v\u0103n h\u00f3a m\u00e0 t\u1eeb ch\u00ednh c\u1ea5u t\u1ea1o h\u00ecnh h\u1ecdc c\u1ee7a n\u00f3. S\u1ef1 \u1ed5n \u0111\u1ecbnh c\u1ee7a h\u00ecnh vu\u00f4ng kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ef1 c\u00e2n b\u1eb1ng c\u1ea3m gi\u00e1c m\u00e0 l\u00e0 s\u1ef1 c\u00e2n b\u1eb1ng logic. M\u1ed9t chi\u1ec1u k\u00edch bi\u1ec3u t\u01b0\u1ee3ng quan tr\u1ecdng kh\u00e1c c\u1ee7a h\u00ecnh vu\u00f4ng n\u1eb1m \u1edf t\u00ednh nh\u00e2n t\u1ea1o c\u1ee7a n\u00f3. So v\u1edbi c\u00e1c \u0111\u01b0\u1eddng cong v\u00e0 h\u00ecnh d\u1ea1ng b\u1ea5t th\u01b0\u1eddng th\u01b0\u1eddng th\u1ea5y trong t\u1ef1 nhi\u00ean, h\u00ecnh vu\u00f4ng l\u00e0 m\u1ed9t c\u1ea5u tr\u00fac nh\u00e2n t\u1ea1o \u0111i\u1ec3n h\u00ecnh. H\u00ecnh vu\u00f4ng t\u1ed3n t\u1ea1i d\u1ef1a tr\u00ean c\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng, g\u00f3c v\u00e0 h\u1ec7 th\u1ed1ng \u0111o l\u01b0\u1eddng, do \u0111\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c coi l\u00e0 bi\u1ec3u t\u01b0\u1ee3ng c\u1ee7a t\u00ednh h\u1ee3p l\u00fd, quy t\u1eafc v\u00e0 c\u1ea5u tr\u00fac th\u1ec3 ch\u1ebf h\u00f3a. Trong c\u00e1c h\u1ec7 th\u1ed1ng k\u00fd hi\u1ec7u h\u00ecnh h\u1ecdc, h\u00ecnh vu\u00f4ng th\u01b0\u1eddng \u0111\u00f3ng vai tr\u00f2 l\u00e0 &quot;n\u1ec1n t\u1ea3ng c\u1ea5u tr\u00fac&quot;, cung c\u1ea5p m\u1ed9t khung \u1ed5n \u0111\u1ecbnh cho c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p h\u01a1n. V\u1ec1 m\u1eb7t kh\u00f4ng gian, h\u00ecnh vu\u00f4ng s\u1edf h\u1eefu kh\u1ea3 n\u0103ng t\u1ed5 ch\u1ee9c \u0111\u1ecbnh h\u01b0\u1edbng r\u00f5 r\u00e0ng. Tr\u00ean v\u00e0 d\u01b0\u1edbi, tr\u00e1i v\u00e0 ph\u1ea3i, trong v\u00e0 ngo\u00e0i \u0111\u01b0\u1ee3c ph\u00e2n bi\u1ec7t r\u00f5 r\u00e0ng trong m\u1ed9t h\u00ecnh vu\u00f4ng; t\u00ednh \u0111\u1ecbnh h\u01b0\u1edbng n\u00e0y li\u00ean k\u1ebft n\u00f3 v\u1edbi kh\u00f4ng gian c\u00f3 tr\u1eadt t\u1ef1 v\u00e0 c\u00e1c c\u1ea5u tr\u00fac chu\u1ea9n m\u1ef1c \u1edf c\u1ea5p \u0111\u1ed9 bi\u1ec3u t\u01b0\u1ee3ng. H\u00ecnh vu\u00f4ng kh\u00f4ng ch\u1ec9 \u0111\u1ecbnh ngh\u0129a kh\u00f4ng gian m\u00e0 c\u00f2n quy\u1ebft \u0111\u1ecbnh c\u00e1ch hi\u1ec3u kh\u00f4ng gian \u0111\u00f3. \u0110i\u1ec1u n\u00e0y khi\u1ebfn n\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ngh\u1ec7 thu\u1eadt tr\u1eebu t\u01b0\u1ee3ng \u0111\u1ec3 th\u1ec3 hi\u1ec7n c\u00e1c h\u1ec7 th\u1ed1ng, khung ho\u1eb7c \u0111i\u1ec1u ki\u1ec7n c\u1ea5u tr\u00fac, h\u01a1n l\u00e0 c\u1ea3m x\u00fac ho\u1eb7c c\u00e1c qu\u00e1 tr\u00ecnh linh ho\u1ea1t. H\u00ecnh vu\u00f4ng c\u0169ng c\u00f3 ti\u1ec1m n\u0103ng m\u00f4 \u0111un \u0111\u00e1ng k\u1ec3. \u0110\u1ed9 d\u00e0i c\u1ea1nh b\u1eb1ng nhau v\u00e0 c\u00e1c g\u00f3c \u0111\u1ed3ng nh\u1ea5t c\u1ee7a n\u00f3 l\u00e0m cho n\u00f3 d\u1ec5 d\u00e0ng l\u1eb7p l\u1ea1i, gh\u00e9p l\u1ea1i v\u00e0 m\u1edf r\u1ed9ng. V\u1ec1 m\u1eb7t bi\u1ec3u t\u01b0\u1ee3ng, kh\u1ea3 n\u0103ng t\u00e1i t\u1ea1o n\u00e0y th\u01b0\u1eddng li\u00ean k\u1ebft h\u00ecnh vu\u00f4ng v\u1edbi c\u00e1c th\u1ec3 ch\u1ebf, h\u1ec7 th\u1ed1ng v\u00e0 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c quy t\u1eafc. M\u1ed9t h\u00ecnh vu\u00f4ng \u0111\u01a1n l\u1ebb kh\u00f4ng quan tr\u1ecdng; \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 n\u00f3 c\u00f3 th\u1ec3 t\u1ea1o th\u00e0nh l\u01b0\u1edbi, m\u1ea3ng v\u00e0 c\u00e1c tr\u01b0\u1eddng c\u1ea5u tr\u00fac. Do \u0111\u00f3, bi\u1ec3u t\u01b0\u1ee3ng c\u1ee7a h\u00ecnh vu\u00f4ng th\u01b0\u1eddng v\u01b0\u1ee3t ra ngo\u00e0i h\u00ecnh d\u1ea1ng ri\u00eang l\u1ebb c\u1ee7a n\u00f3, h\u01b0\u1edbng \u0111\u1ebfn to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng. Tuy nhi\u00ean, bi\u1ec3u t\u01b0\u1ee3ng c\u1ee7a h\u00ecnh vu\u00f4ng kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng ch\u1ec9 ra s\u1ef1 \u1ed5n \u0111\u1ecbnh t\u0129nh t\u1ea1i. Khi m\u1ed9t h\u00ecnh vu\u00f4ng b\u1ecb xoay, d\u1ecbch chuy\u1ec3n, chia nh\u1ecf ho\u1eb7c t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a n\u00f3 b\u1ecb ph\u00e1 v\u1ee1, s\u1ef1 c\u0103ng th\u1eb3ng v\u1ec1 c\u1ea5u tr\u00fac c\u1ee7a n\u00f3 tr\u1edf n\u00ean r\u00f5 r\u00e0ng. M\u1ed9t h\u00ecnh vu\u00f4ng b\u1ecb nghi\u00eang l\u00e0m suy y\u1ebfu c\u1ea3m gi\u00e1c tr\u1eadt t\u1ef1 c\u1ee7a n\u00f3, trong khi m\u1ed9t h\u00ecnh vu\u00f4ng b\u1ecb v\u1ee1 l\u1ea1i g\u00e2y ra s\u1ef1 b\u1ea5t \u1ed5n v\u00e0 xung \u0111\u1ed9t. \u0110i\u1ec1u n\u00e0y cho th\u1ea5y \u00fd ngh\u0129a bi\u1ec3u t\u01b0\u1ee3ng c\u1ee7a h\u00ecnh vu\u00f4ng kh\u00f4ng c\u1ed1 \u0111\u1ecbnh m\u00e0 ph\u1ee5 thu\u1ed9c v\u00e0o ng\u1eef c\u1ea3nh quan h\u1ec7 c\u1ee7a n\u00f3. V\u00ec v\u1eady, trong h\u1ec7 th\u1ed1ng bi\u1ec3u t\u01b0\u1ee3ng c\u1ee7a c\u00e1c k\u00fd hi\u1ec7u h\u00ecnh h\u1ecdc c\u01a1 b\u1ea3n, h\u00ecnh vu\u00f4ng kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 t\u1eeb \u0111\u1ed3ng ngh\u0129a v\u1edbi &quot;s\u1ef1 \u1ed5n \u0111\u1ecbnh&quot;, m\u00e0 l\u00e0 m\u1ed9t h\u00ecnh th\u1ee9c c\u1ed1t l\u00f5i t\u01b0\u1ee3ng tr\u01b0ng cho tr\u1eadt t\u1ef1 h\u1ee3p l\u00fd, c\u1ea5u tr\u00fac nh\u00e2n t\u1ea1o v\u00e0 ranh gi\u1edbi h\u1ec7 th\u1ed1ng. Th\u00f4ng qua c\u1ea5u tr\u00fac r\u00f5 r\u00e0ng v\u00e0 c\u00f3 th\u1ec3 \u0111o l\u01b0\u1eddng \u0111\u01b0\u1ee3c, n\u00f3 h\u01b0\u1edbng d\u1eabn ngh\u1ec7 thu\u1eadt tr\u1eebu t\u01b0\u1ee3ng \u0111\u1ebfn c\u00e1c quy t\u1eafc, khu\u00f4n kh\u1ed5 v\u00e0 bi\u1ec3u \u0111\u1ea1t ng\u00f4n ng\u1eef, tr\u1edf th\u00e0nh m\u1ed9t n\u1ec1n t\u1ea3ng h\u1ee3p l\u00fd kh\u00f4ng th\u1ec3 thi\u1ebfu trong h\u1ec7 th\u1ed1ng bi\u1ec3u t\u01b0\u1ee3ng h\u00ecnh h\u1ecdc.<\/p>\n\r\n            <\/div>\r\n        <\/details><\/p>","protected":false},"excerpt":{"rendered":"<p>2\u3001\u6b63\u65b9\u5f62 \u5728\u57fa\u672c\u51e0\u4f55\u7b26\u53f7\u4f53\u7cfb\u4e2d\uff0c\u6b63\u65b9\u5f62\u662f\u4e00\u79cd\u9ad8\u5ea6\u7406\u6027\u5316\u3001\u7ed3\u6784\u660e\u786e\u7684\u5f62\u6001\u3002\u5b83\u7531\u56db\u6761\u7b49\u957f\u76f4\u7ebf\u548c\u56db\u4e2a\u76f4\u89d2\u6784\u6210\uff0c\u65b9\u5411 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_crdt_document":"","footnotes":""},"class_list":["post-979","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/arttao.net\/vi\/wp-json\/wp\/v2\/pages\/979","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/arttao.net\/vi\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/arttao.net\/vi\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/arttao.net\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/arttao.net\/vi\/wp-json\/wp\/v2\/comments?post=979"}],"version-history":[{"count":3,"href":"https:\/\/arttao.net\/vi\/wp-json\/wp\/v2\/pages\/979\/revisions"}],"predecessor-version":[{"id":1009,"href":"https:\/\/arttao.net\/vi\/wp-json\/wp\/v2\/pages\/979\/revisions\/1009"}],"wp:attachment":[{"href":"https:\/\/arttao.net\/vi\/wp-json\/wp\/v2\/media?parent=979"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}