这里用到平行等角,直角三角形内角之和=180,菱形两邻角之和=180,都是最简单的几何原理。要是还看不懂就只好被咱鄙视一下哈。
这里用到平行等角,直角三角形内角之和=180,菱形两邻角之和=180,都是最简单的几何原理。要是还看不懂就只好被咱鄙视一下哈。
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