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Phạm Hàn Minh Chương
Giới thiệu về bản thân
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2022-08-24 22:45:49
a) A nằm có nằm giữa O và B vì OB>OA
b) AB = OB - OA = 16 - 8 = 8 ( cm)
c) OA= OB - AB = 16 - 8 = 8(cm)
vậy OA = AB do đó A là trung điểm của OB nhé !