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Đang tải... (xem toàn văn)
Baøi 6. Töù giaùc ABCD coù hai ñöôøng cheùo AC vaø BD caét nhau taïi O, ABÂD = ACÂD. Goïi E laø giao ñieåm cuûa cuûa hai ñöôøng thaúng AD vaø BC. ∆AOB vaø ∆DOC ñoàng daïng. ∆AOD vaø ∆BO[r]
Toán 8 Hình Học [123doc.vn] cac bài tập ve talet va tam giac dong dang them
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