平行四边形ABCD,角A=角B,则角B=?,角C=?
人气:317 ℃ 时间:2020-04-30 15:01:18
解答
既然是平行四边形ABCD
那么AB如果是邻角,两邻角之和等于180°
所以两角都是90°,就是矩形了,那么C也等于90°
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