如图，在折纸活动中，小明制作了一张△ABC纸片，点D、E分别是边AB、AC上的点，将△ABC沿着DE折叠压平，A与A′重合，若∠A=70°，则∠1＋∠2=_刷题宝

题干

如图，在折纸活动中，小明制作了一张△ABC纸片，点D、E分别是边AB、AC上的点，将△ABC沿着DE折叠压平，A与A′重合，若∠A=70°，则∠1＋∠2=（　　）

A：110°

B：140°

C：220°

D：70°

上一题下一题 0.0难度选择题更新时间:2017-05-03 04:43:35

答案(点此获取答案解析）

B

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