Mathematics, 07.09.2021 01:50 lavardamon123
Câu 1. Cho tam giác ABC vuông ở A(AB < AC), đường cao AH, biết AB = 6cm. Đường trung trực của BC cắt các đường thẳng AB, AC, BC theo thứ tự ở D, E và F biết DE = 5cm, EF = 4cm. Chứng minh:
a) Tam giác FEC đồng dạng với tam giác FBD
b) Tam giác AED đồng dạng với tam giác HAC
c) Tính BC, AH, AC
Answers: 2
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Câu 1. Cho tam giác ABC vuông ở A(AB < AC), đường cao AH, biết AB = 6cm. Đường trung trực của BC...
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