Mathematics, 15.12.2021 14:00 FoxodyGirl7134
Cho tam giác ABC có AB=AC. Tia phân giác của góc A cắt BC ở D
a) Chứng minh tam giác ABD = tam giác ACD
b) Chứng minh AD vuông góc với BC
c) Vẽ DH vuông góc với AB( H thuộc AB), DK vuông góc với AC( K thuộc AC)
Chứng minh DH=DK
Answers: 1
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Cho tam giác ABC có AB=AC. Tia phân giác của góc A cắt BC ở D
a) Chứng minh tam giác ABD = tam gi...
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