如图,△ABC中,AB="AC,"E在BC上,D在AE上.则下列说法中正确的有( )①若E为BC中点,则有BD=CD; ②若BD="CD,"则E为BC

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如图, △ABC中, AB =" AC," E在BC上, D在AE上. 则下列说法中正确的有( )
①若E为BC中点, 则有BD = CD; ②若BD =" CD," 则E为BC中点;
③若AE⊥BC, 则有BD = CD; ④若BD =" CD," 则AE⊥BC.

A. ①③④ B. ②③④ C. ①②③ D. ①②③④

上一题下一题 0.65难度单选题更新时间:2017-12-12 06:14:57

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