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下列性质中,等腰三角形具有而直角三角形不一定具有的是( ) A.两边之和大于第三...
下列性质中,等腰三角形具有而直角三角形不一定具有的是( )
A.两边之和大于第三边
B.有一个角的平分线垂直于这个角的对边
C.有两个锐角的和等于90°
D.内角和等于180°
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