Mathematics, 12.08.2021 14:00 stevenssimeon30
Bài 3. Cho hình thang cân ABCD có AB // CD, AB < CD. O là giao điểm của hai đường chéo. Chứng minh OA = OB, OC = OD.
Answers: 1
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Bài 3. Cho hình thang cân ABCD có AB // CD, AB < CD. O là giao điểm của hai đường
chéo. Chứng mi...
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