CHO HÌNH BÌNH HÀNH ABCD TÂM O . KHI ĐÓ OA OB         ...

câu 17. - BAI TAP TRAC NGHIEM HINH HOC 10 CHUONG 1

BAI TAP TRAC NGHIEM HINH HOC 10 CHUONG 1

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Câu 17. Cho hình bình hành ABCD tâm O . Khi đó ^{OA OB} ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^

A. ^ ^ ^ ^ ^ ^ ^ ^ ^OC ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^OB . B. 

AB . C. ^ ^ ^ ^ ^ ^ ^ ^ ^OC ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^OD . D. 

CD .