Sau \u0111\u00e2y l\u00e0 6 b\u00e0i to\u00e1n th\u01b0\u1eddng g\u1eb7p trong ch\u01b0\u01a1ng tr\u00ecnh H\u00ecnh h\u1ecdc kh\u00f4ng gian l\u1edbp 11. \u0110\u00e2y l\u00e0 6 b\u00e0i to\u00e1n c\u01a1 b\u1ea3n m\u00e0 h\u1ecdc sinh c\u1ea7n n\u1eafm \u0111\u01b0\u1ee3c ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3i \u0111\u1ec3 l\u00e0m t\u1ed1t h\u1ea7u h\u1ebft b\u00e0i t\u1eadp trong SGK, SBT, \u0111\u1ec1 thi h\u1ecdc k\u00ec v\u00e0 l\u00e0 n\u1ec1n t\u1ea3ng \u0111\u1ec3 ti\u1ebfp thu ki\u1ebfn th\u1ee9c H\u00ecnh h\u1ecdc kh\u00f4ng gian l\u1edbp 12.<\/p>\n
B\u00e0i to\u00e1n 1: T\u00ecm giao tuy\u1ebfn c\u1ee7a hai m\u1eb7t ph\u1eb3ng<\/strong><\/h3>\nV\u00ed d\u1ee5:<\/strong>\u00a0Cho \u0111i\u1ec3m A kh\u00f4ng n\u1eb1m tr\u00ean m\u1eb7t ph\u1eb3ng (P) ch\u01b0a tam gi\u00e1c BCD. L\u1ea5y E, F l\u00e0 c\u00e1c \u0111i\u1ec3m l\u1ea7n l\u01b0\u1ee3t n\u1eb1m tr\u00ean c\u00e1c c\u1ea1nh AB, AC sao cho EF c\u1eaft BC t\u1ea1i I. T\u00ecm giao tuy\u1ebfn c\u1ee7a 2 mp(DBC) v\u00e0 (DEF).<\/em><\/p>\nPh\u01b0\u01a1ng ph\u00e1p gi\u1ea3i nhanh nh\u1ea5t:
\nC\u00e1ch 1:<\/strong> T\u00ecm 2 \u0111i\u1ec3m chung c\u1ee7a 2 m\u1eb7t ph\u1eb3ng \u0111\u00f3.
\n\u2013 \u0110i\u1ec3m chung th\u1ee9 nh\u1ea5t th\u01b0\u1eddng d\u1ec5 th\u1ea5y.
\n\u2013 \u0110i\u1ec3m chung th\u1ee9 hai l\u00e0 giao \u0111i\u1ec3m c\u1ee7a 2 \u0111\u01b0\u1eddng th\u1eb3ng c\u00f2n l\u1ea1i, kh\u00f4ng qua \u0111i\u1ec3m chung th\u1ee9 nh\u1ea5t.
\n
\nC\u00e1ch 2:<\/strong> N\u1ebfu trong 2 m\u1eb7t ph\u1eb3ng c\u00f3 ch\u1ee9a 2 \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec ch\u1ec9 c\u1ea7n t\u00ecm 1 \u0111i\u1ec3m chung, khi \u0111\u00f3 giao tuy\u1ebfn s\u1ebd \u0111i qua \u0111i\u1ec3m chung v\u00e0 song song v\u1edbi 2 \u0111\u01b0\u1eddng th\u1eb3ng n\u00e0y.<\/p>\nB\u00e0i to\u00e1n 2: T\u00ecm giao \u0111i\u1ec3m c\u1ee7a \u0111\u01b0\u1eddng th\u1eb3ng a v\u00e0 m\u1eb7t ph\u1eb3ng (P)<\/strong><\/h3>\nC\u00e1c ph\u01b0\u01a1ng ph\u00e1p:
\n\u2013 Ta t\u00ecm giao \u0111i\u1ec3m c\u1ee7a a v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng b n\u00e0o \u0111\u00f3 n\u1eb1m trong (P).
\n\u2013 Khi kh\u00f4ng th\u1ea5y \u0111\u01b0\u1eddng th\u1eb3ng b, ta th\u1ef1c hi\u1ec7n theo c\u00e1c b\u01b0\u1edbc sau:
\n1. T\u00ecm m\u1ed9t mp (Q) ch\u1ee9a a.
\n2. T\u00ecm giao tuy\u1ebfn b c\u1ee7a (P) v\u00e0 (Q).
\n3. G\u1ecdi: A = a \u2229 b th\u00ec: A = a \u2229 (P).<\/p>\n
B\u00e0i to\u00e1n 3: Ch\u1ee9ng minh 3 \u0111i\u1ec3m th\u1eb3ng h\u00e0ng<\/strong><\/h3>\n\u0110\u1ec3 ch\u1ee9ng minh 3 \u0111i\u1ec3m hay nhi\u1ec1u h\u01a1n 3 \u0111i\u1ec3m th\u1eb3ng h\u00e0ng ta ch\u1ee9ng minh c\u00e1c \u0111i\u1ec3m \u1ea5y thu\u1ed9c 2 m\u1eb7t ph\u1eb3ng ph\u00e2n bi\u1ec7t.<\/p>\nB\u00e0i to\u00e1n 4: Ch\u1ee9ng minh 3 \u0111\u01b0\u1eddng th\u1eb3ng a, b, c \u0111\u1ed3ng quy<\/strong><\/h3>\nPh\u01b0\u01a1ng ph\u00e1p gi\u1ea3i nhanh nh\u1ea5t:
\n\u2013 C\u00e1ch 1<\/strong>: Ta ch\u1ee9ng minh giao \u0111i\u1ec3m c\u1ee7a 2 \u0111\u01b0\u1eddng th\u1eb3ng n\u00e0y l\u00e0 \u0111i\u1ec3m chung c\u1ee7a 2 mp m\u00e0 giao tuy\u1ebfn l\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng th\u1ee9 ba.
\nT\u00ecm A = a \u2229 b.
\nT\u00ecm 2 mp (P), (Q), ch\u1ee9a A m\u00e0 (P) \u2229 (Q) = c.\u2013 C\u00e1ch 2<\/strong>: Ta ch\u1ee9ng minh: a, b, c kh\u00f4ng \u0111\u1ed3ng ph\u1eb3ng v\u00e0 c\u1eaft nhau t\u1eebng \u0111\u00f4i m\u1ed9t.![\"3](\"http:\/\/tintuc.hocmai.vn\/images\/stories\/anh_tin_tuc\/2015\/1\/387x269xbt2.png.pagespeed.ic.Clb8PuVq11.png\")
<\/div>\nB\u00e0i to\u00e1n: Ch\u1ee9ng minh 3 \u0111\u01b0\u1eddng th\u1eb3ng \u0111\u1ed3ng quy trong kh\u00f4ng gian<\/em><\/p>\nB\u00e0i to\u00e1n 5: T\u00ecm t\u1eadp h\u1ee3p giao \u0111i\u1ec3m M c\u1ee7a 2 \u0111\u01b0\u1eddng th\u1eb3ng di \u0111\u1ed9ng a, b<\/strong><\/h3>\nPh\u01b0\u01a1ng ph\u00e1p gi\u1ea3i nhanh nh\u1ea5t:
\n\u2013 T\u00ecm mp (P) c\u1ed1 \u0111\u1ecbnh ch\u1ee9a a.
\n\u2013 T\u00ecm mp (Q) c\u1ed1 \u0111\u1ecbnh ch\u1ee9a b.
\n\u2013 T\u00ecm c = (P) \u2229 (Q). Ta c\u00f3 M thu\u1ed9c c.
\n\u2013 Gi\u1edbi h\u1ea1n.<\/p>\n
B\u00e0i to\u00e1n 6: D\u1ef1ng thi\u1ebft di\u1ec7n c\u1ee7a mp(P) v\u00e0 m\u1ed9t kh\u1ed1i \u0111a di\u1ec7n T<\/strong><\/h3>\nPh\u01b0\u01a1ng ph\u00e1p gi\u1ea3i nhanh nh\u1ea5t: Mu\u1ed1n t\u00ecm thi\u1ebft di\u1ec7n c\u1ee7a mp (P) v\u00e0 kh\u1ed1i \u0111a di\u1ec7n T, ta \u0111i t\u00ecm \u0111o\u1ea1n giao tuy\u1ebfn c\u1ee7a mp(P) v\u1edbi c\u00e1c m\u1eb7t c\u1ee7a T. \u0110\u1ec3 t\u00ecm giao tuy\u1ebfn c\u1ee7a (P) v\u1edbi c\u00e1c m\u1eb7t c\u1ee7a T, ta th\u1ef1c hi\u1ec7n theo c\u00e1c b\u01b0\u1edbc:
\n1. T\u1eeb c\u00e1c \u0111i\u1ec3m chung c\u00f3 s\u1eb5n, x\u00e1c \u0111\u1ecbnh giao tuy\u1ebfn \u0111\u1ea7u ti\u00ean c\u1ee7a (P) v\u1edbi m\u1ed9t m\u1eb7t c\u1ee7a T.
\n2. K\u00e9o d\u00e0i giao tuy\u1ebfn \u0111\u00e3 c\u00f3, t\u00ecm giao \u0111i\u1ec3m v\u1edbi c\u00e1c c\u1ea1nh c\u1ee7a m\u1eb7t n\u00e0y t\u1eeb \u0111\u00f3 l\u00e0m t\u01b0\u01a1ng t\u1ef1 ta t\u00ecm \u0111\u01b0\u1ee3c c\u00e1c giao tuy\u1ebfn c\u00f2n l\u1ea1i, cho t\u1edbi khi c\u00e1c \u0111o\u1ea1n giao tuy\u1ebfn kh\u00e9p k\u00edn ta s\u1ebd c\u00f3 thi\u1ebft di\u1ec7n c\u1ea7n d\u1ef1ng.<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"
H\u00ecnh h\u1ecdc kh\u00f4ng gian l\u1edbp 11 l\u00e0 n\u1ec1n t\u1ea3ng c\u01a1 b\u1ea3n c\u1ee7a h\u00ecnh h\u1ecdc kh\u00f4ng gian. \u0110\u1ec3 l\u00e0m \u0111\u01b0\u1ee3c 2 d\u1ea1ng b\u00e0i \u0111i\u1ec3n h\u00ecnh trong \u0111\u1ec1 thi \u0111\u1ea1i h\u1ecdc l\u00e0 t\u00ednh kho\u1ea3ng c\u00e1ch v\u00e0 t\u00ednh th\u1ec3 t\u00edch, h\u1ecdc sinh c\u1ea7n n\u1eafm \u0111\u01b0\u1ee3c 6 d\u1ea1ng b\u00e0i c\u01a1 b\u1ea3n n\u00e0y.\u00a0 Sau \u0111\u00e2y l\u00e0 6 b\u00e0i to\u00e1n th\u01b0\u1eddng […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[172],"tags":[],"yoast_head":"\n
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C\u1ed9ng \u0111\u1ed3ng h\u1ecdc sinh l\u1edbp 12\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/lop12.edu.vn\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/lop12.edu.vn\/#\/schema\/person\/a37935c3c859cc908088334047878c87\",\"name\":\"Thu H\u01b0\u01a1ng\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/lop12.edu.vn\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/5cb73f4a14844c4a42ce9b1decae8026?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/5cb73f4a14844c4a42ce9b1decae8026?s=96&d=mm&r=g\",\"caption\":\"Thu H\u01b0\u01a1ng\"},\"url\":\"https:\/\/lop12.edu.vn\/author\/huongttt2\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"[To\u00e1n h\u1ecdc] 6 b\u00e0i to\u00e1n h\u00ecnh h\u1ecdc kh\u00f4ng gian l\u1edbp 11 th\u01b0\u1eddng g\u1eb7p","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/lop12.edu.vn\/6-bai-toan-hinh-hoc-khong-gian-lop-11-thuong-gap\/","og_locale":"en_US","og_type":"article","og_title":"[To\u00e1n h\u1ecdc] 6 b\u00e0i to\u00e1n h\u00ecnh h\u1ecdc kh\u00f4ng gian l\u1edbp 11 th\u01b0\u1eddng g\u1eb7p","og_description":"H\u00ecnh h\u1ecdc kh\u00f4ng gian l\u1edbp 11 l\u00e0 n\u1ec1n t\u1ea3ng c\u01a1 b\u1ea3n c\u1ee7a h\u00ecnh h\u1ecdc kh\u00f4ng gian. \u0110\u1ec3 l\u00e0m \u0111\u01b0\u1ee3c 2 d\u1ea1ng b\u00e0i \u0111i\u1ec3n h\u00ecnh trong \u0111\u1ec1 thi \u0111\u1ea1i h\u1ecdc l\u00e0 t\u00ednh kho\u1ea3ng c\u00e1ch v\u00e0 t\u00ednh th\u1ec3 t\u00edch, h\u1ecdc sinh c\u1ea7n n\u1eafm \u0111\u01b0\u1ee3c 6 d\u1ea1ng b\u00e0i c\u01a1 b\u1ea3n n\u00e0y.\u00a0 Sau \u0111\u00e2y l\u00e0 6 b\u00e0i to\u00e1n th\u01b0\u1eddng […]","og_url":"https:\/\/lop12.edu.vn\/6-bai-toan-hinh-hoc-khong-gian-lop-11-thuong-gap\/","og_site_name":"Lop12.edu.vn - C\u1ed9ng \u0111\u1ed3ng h\u1ecdc sinh l\u1edbp 12 l\u1edbn nh\u1ea5t t\u1ea1i Vi\u1ec7t Nam","article_published_time":"2016-12-19T03:34:15+00:00","og_image":[{"url":"http:\/\/tintuc.hocmai.vn\/images\/stories\/anh_tin_tuc\/2015\/1\/387x269xbt2.png.pagespeed.ic.Clb8PuVq11.png"}],"author":"Thu H\u01b0\u01a1ng","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Thu H\u01b0\u01a1ng","Est. reading time":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/lop12.edu.vn\/6-bai-toan-hinh-hoc-khong-gian-lop-11-thuong-gap\/","url":"https:\/\/lop12.edu.vn\/6-bai-toan-hinh-hoc-khong-gian-lop-11-thuong-gap\/","name":"[To\u00e1n h\u1ecdc] 6 b\u00e0i to\u00e1n h\u00ecnh h\u1ecdc kh\u00f4ng gian l\u1edbp 11 th\u01b0\u1eddng g\u1eb7p","isPartOf":{"@id":"https:\/\/lop12.edu.vn\/#website"},"datePublished":"2016-12-19T03:34:15+00:00","dateModified":"2016-12-19T03:34:15+00:00","author":{"@id":"https:\/\/lop12.edu.vn\/#\/schema\/person\/a37935c3c859cc908088334047878c87"},"breadcrumb":{"@id":"https:\/\/lop12.edu.vn\/6-bai-toan-hinh-hoc-khong-gian-lop-11-thuong-gap\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/lop12.edu.vn\/6-bai-toan-hinh-hoc-khong-gian-lop-11-thuong-gap\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/lop12.edu.vn\/6-bai-toan-hinh-hoc-khong-gian-lop-11-thuong-gap\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/lop12.edu.vn\/"},{"@type":"ListItem","position":2,"name":"[To\u00e1n h\u1ecdc] 6 b\u00e0i to\u00e1n h\u00ecnh h\u1ecdc kh\u00f4ng gian l\u1edbp 11 th\u01b0\u1eddng g\u1eb7p"}]},{"@type":"WebSite","@id":"https:\/\/lop12.edu.vn\/#website","url":"https:\/\/lop12.edu.vn\/","name":"Lop12.edu.vn - 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Ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3i nhanh nh\u1ea5t: C\u00e1c ph\u01b0\u01a1ng ph\u00e1p: Ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3i nhanh nh\u1ea5t: Ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3i nhanh nh\u1ea5t: Ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3i nhanh nh\u1ea5t: Mu\u1ed1n t\u00ecm thi\u1ebft di\u1ec7n c\u1ee7a mp (P) v\u00e0 kh\u1ed1i \u0111a di\u1ec7n T, ta \u0111i t\u00ecm \u0111o\u1ea1n giao tuy\u1ebfn c\u1ee7a mp(P) v\u1edbi c\u00e1c m\u1eb7t c\u1ee7a T. \u0110\u1ec3 t\u00ecm giao tuy\u1ebfn c\u1ee7a (P) v\u1edbi c\u00e1c m\u1eb7t c\u1ee7a T, ta th\u1ef1c hi\u1ec7n theo c\u00e1c b\u01b0\u1edbc: H\u00ecnh h\u1ecdc kh\u00f4ng gian l\u1edbp 11 l\u00e0 n\u1ec1n t\u1ea3ng c\u01a1 b\u1ea3n c\u1ee7a h\u00ecnh h\u1ecdc kh\u00f4ng gian. \u0110\u1ec3 l\u00e0m \u0111\u01b0\u1ee3c 2 d\u1ea1ng b\u00e0i \u0111i\u1ec3n h\u00ecnh trong \u0111\u1ec1 thi \u0111\u1ea1i h\u1ecdc l\u00e0 t\u00ednh kho\u1ea3ng c\u00e1ch v\u00e0 t\u00ednh th\u1ec3 t\u00edch, h\u1ecdc sinh c\u1ea7n n\u1eafm \u0111\u01b0\u1ee3c 6 d\u1ea1ng b\u00e0i c\u01a1 b\u1ea3n n\u00e0y.\u00a0 Sau \u0111\u00e2y l\u00e0 6 b\u00e0i to\u00e1n th\u01b0\u1eddng […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[172],"tags":[],"yoast_head":"\n
\nC\u00e1ch 1:<\/strong> T\u00ecm 2 \u0111i\u1ec3m chung c\u1ee7a 2 m\u1eb7t ph\u1eb3ng \u0111\u00f3.
\n\u2013 \u0110i\u1ec3m chung th\u1ee9 nh\u1ea5t th\u01b0\u1eddng d\u1ec5 th\u1ea5y.
\n\u2013 \u0110i\u1ec3m chung th\u1ee9 hai l\u00e0 giao \u0111i\u1ec3m c\u1ee7a 2 \u0111\u01b0\u1eddng th\u1eb3ng c\u00f2n l\u1ea1i, kh\u00f4ng qua \u0111i\u1ec3m chung th\u1ee9 nh\u1ea5t.
\n
\nC\u00e1ch 2:<\/strong> N\u1ebfu trong 2 m\u1eb7t ph\u1eb3ng c\u00f3 ch\u1ee9a 2 \u0111\u01b0\u1eddng th\u1eb3ng song song th\u00ec ch\u1ec9 c\u1ea7n t\u00ecm 1 \u0111i\u1ec3m chung, khi \u0111\u00f3 giao tuy\u1ebfn s\u1ebd \u0111i qua \u0111i\u1ec3m chung v\u00e0 song song v\u1edbi 2 \u0111\u01b0\u1eddng th\u1eb3ng n\u00e0y.<\/p>\nB\u00e0i to\u00e1n 2: T\u00ecm giao \u0111i\u1ec3m c\u1ee7a \u0111\u01b0\u1eddng th\u1eb3ng a v\u00e0 m\u1eb7t ph\u1eb3ng (P)<\/strong><\/h3>\n
\n\u2013 Ta t\u00ecm giao \u0111i\u1ec3m c\u1ee7a a v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng b n\u00e0o \u0111\u00f3 n\u1eb1m trong (P).
\n\u2013 Khi kh\u00f4ng th\u1ea5y \u0111\u01b0\u1eddng th\u1eb3ng b, ta th\u1ef1c hi\u1ec7n theo c\u00e1c b\u01b0\u1edbc sau:
\n1. T\u00ecm m\u1ed9t mp (Q) ch\u1ee9a a.
\n2. T\u00ecm giao tuy\u1ebfn b c\u1ee7a (P) v\u00e0 (Q).
\n3. G\u1ecdi: A = a \u2229 b th\u00ec: A = a \u2229 (P).<\/p>\nB\u00e0i to\u00e1n 3: Ch\u1ee9ng minh 3 \u0111i\u1ec3m th\u1eb3ng h\u00e0ng<\/strong><\/h3>\n
B\u00e0i to\u00e1n 4: Ch\u1ee9ng minh 3 \u0111\u01b0\u1eddng th\u1eb3ng a, b, c \u0111\u1ed3ng quy<\/strong><\/h3>\n
\n\u2013 C\u00e1ch 1<\/strong>: Ta ch\u1ee9ng minh giao \u0111i\u1ec3m c\u1ee7a 2 \u0111\u01b0\u1eddng th\u1eb3ng n\u00e0y l\u00e0 \u0111i\u1ec3m chung c\u1ee7a 2 mp m\u00e0 giao tuy\u1ebfn l\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng th\u1ee9 ba.
\nT\u00ecm A = a \u2229 b.
\nT\u00ecm 2 mp (P), (Q), ch\u1ee9a A m\u00e0 (P) \u2229 (Q) = c.\u2013 C\u00e1ch 2<\/strong>: Ta ch\u1ee9ng minh: a, b, c kh\u00f4ng \u0111\u1ed3ng ph\u1eb3ng v\u00e0 c\u1eaft nhau t\u1eebng \u0111\u00f4i m\u1ed9t.<\/div>\nB\u00e0i to\u00e1n 5: T\u00ecm t\u1eadp h\u1ee3p giao \u0111i\u1ec3m M c\u1ee7a 2 \u0111\u01b0\u1eddng th\u1eb3ng di \u0111\u1ed9ng a, b<\/strong><\/h3>\n
\n\u2013 T\u00ecm mp (P) c\u1ed1 \u0111\u1ecbnh ch\u1ee9a a.
\n\u2013 T\u00ecm mp (Q) c\u1ed1 \u0111\u1ecbnh ch\u1ee9a b.
\n\u2013 T\u00ecm c = (P) \u2229 (Q). Ta c\u00f3 M thu\u1ed9c c.
\n\u2013 Gi\u1edbi h\u1ea1n.<\/p>\nB\u00e0i to\u00e1n 6: D\u1ef1ng thi\u1ebft di\u1ec7n c\u1ee7a mp(P) v\u00e0 m\u1ed9t kh\u1ed1i \u0111a di\u1ec7n T<\/strong><\/h3>\n
\n1. T\u1eeb c\u00e1c \u0111i\u1ec3m chung c\u00f3 s\u1eb5n, x\u00e1c \u0111\u1ecbnh giao tuy\u1ebfn \u0111\u1ea7u ti\u00ean c\u1ee7a (P) v\u1edbi m\u1ed9t m\u1eb7t c\u1ee7a T.
\n2. K\u00e9o d\u00e0i giao tuy\u1ebfn \u0111\u00e3 c\u00f3, t\u00ecm giao \u0111i\u1ec3m v\u1edbi c\u00e1c c\u1ea1nh c\u1ee7a m\u1eb7t n\u00e0y t\u1eeb \u0111\u00f3 l\u00e0m t\u01b0\u01a1ng t\u1ef1 ta t\u00ecm \u0111\u01b0\u1ee3c c\u00e1c giao tuy\u1ebfn c\u00f2n l\u1ea1i, cho t\u1edbi khi c\u00e1c \u0111o\u1ea1n giao tuy\u1ebfn kh\u00e9p k\u00edn ta s\u1ebd c\u00f3 thi\u1ebft di\u1ec7n c\u1ea7n d\u1ef1ng.<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"