Cho tam giác ABC có cạnh AB = AC, M là trung điểm của BC. Chứng minh rằng tam giác ABM = tam giác ACM
giúp mik nhé
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body button,
body [type='button'],
body input[type='reset'],
body input[type='submit'],
body [role="button"],
::-webkit-search-cancel-button,
::-webkit-search-decoration,
::-webkit-scrollbar-button,
::-webkit-file-upload-button,
body .sweezy-custom-cursor-hover {
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}</style>
----- Nội dung dịch tự động từ ảnh -----
Bài 4 (3,5 điểm): Cho AABC có cạnh AB = AC, M là trung điểm của BC,
a) Chứng minh AABM= AACM.
b) Trên tía đối của tia MA lây điêm D sao cho MD MA. Chứng minh AC BD,
=
c) Chứng minh AB // CD
d) Trên nửa mặt phẳng bờ là AC không chứa điêm B, ve tia Ax // BC lấy điểm Ie Ax sao cho
AI = BC. Chứng minh 3 điểm D, C, I thắng hàng.
giá trị lớn nhất của biểu thức:
=
<style id="sweezy-cursors--styles" type="text/css">body a,
body button,
body [type='button'],
body input[type='reset'],
body input[type='submit'],
body [role="button"],
::-webkit-search-cancel-button,
::-webkit-search-decoration,
::-webkit-scrollbar-button,
::-webkit-file-upload-button,
body .sweezy-custom-cursor-hover {
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}</style>
----- Nội dung dịch tự động từ ảnh -----
Bài 4 (3,5 điểm): Cho AABC có cạnh AB = AC, M là trung điểm của BC,
a) Chứng minh AABM= AACM.
b) Trên tía đối của tia MA lây điêm D sao cho MD MA. Chứng minh AC BD,
=
c) Chứng minh AB // CD
d) Trên nửa mặt phẳng bờ là AC không chứa điêm B, ve tia Ax // BC lấy điểm Ie Ax sao cho
AI = BC. Chứng minh 3 điểm D, C, I thắng hàng.
giá trị lớn nhất của biểu thức:
=