而菱形的邻角互补,所以必须等于90度。
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是这样
-芝麻-
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12/06/2012 postreply
10:17:07
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如果不是正方形AX≠BX, 如果是正方形AX=BX 不论AX是否垂直BX
-yddad-
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12/06/2012 postreply
10:21:53
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是不是要证明AX=BY呀?
-芝麻-
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12/06/2012 postreply
10:33:22
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两边一角(直角)相同 第三边 AX=BY
-yddad-
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12/06/2012 postreply
10:39:24
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回复:假如要证的条件成立,再加上给定的条件,两个三角形ABX和BCY三边相等,所以全等,所以三角相等,
-桃花流水杳然去-
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12/06/2012 postreply
10:18:13
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