Mathematics, 09.12.2021 14:00 friendsalwaysbae
Cho hình tam giác ABCD, có AB= 6cm, AD=4cm. Các tia phân giác góc của hình bình hành cắt nhau tạo thành tứ giác EFGH
a) Tứ giác EFGH là hình gì? Vì sao?
b) Tính độ dài đường chéo của tứ giác EFGH
c) Hình bình hành ABCD có thêm điều kiện gì thì tứ giác EFGH có diện tích lớn nhất.
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Cho hình tam giác ABCD, có AB= 6cm, AD=4cm. Các tia phân giác góc của hình bình hành cắt nhau tạo th...
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