试题与答案

等边三角形绕它的角平分线交点旋转α后与原图形重合,则α的最小值为( ) A.30

题型:选择题

题目:

等边三角形绕它的角平分线交点旋转α后与原图形重合,则α的最小值为(  )

A.30°

B.60°

C.120°

D.90°

答案:

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