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Nghoangnamvn2000
2 năm trước
Cho tam giác vuông ABC , vuông tại A , góc B =45 độ . Từ M là trung điểm BC ta hạ MI vuông góc với AB, mk vuông góc với AC a) cm tứ giác AIMK là hình vuông b) tính diện tích hình vuông AIMK biêtd cạng AB = a
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