如图,小红在作线段AB的垂直平分线时,是这样操作的:分别以点A,

如图,小红在作线段AB的垂直平分线时,是这样操作的:分别以点AB为圆心,大于线段AB长度一半的长为半径画弧,相交于点CD,则直线CD即为所求。连结ACBCADBD,根据她的作图方法可知,四边形ADBC一定是

A. 矩形                            B. 菱形

C. 正方形                          D. 等腰梯形

答案

B

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