将一幅三角板中的两块直角三角尺的直角顶点c按如图方式叠放在一起:三角尺ACD不动,将三角尺BCE的CE边与CA边重合,然后绕点C按顺时针或逆时针.方向任意转动一个角度,当∠ACE(o°<∠ACE<90
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![将一幅三角板中的两块直角三角尺的直角顶点c按如图方式叠放在一起:三角尺ACD不动,将三角尺BCE的CE边与CA边重合,然后绕点C按顺时针或逆时针.方向任意转动一个角度,当∠ACE(o°<∠ACE<90](/uploads/image/z/2577551-23-1.jpg?t=%E5%B0%86%E4%B8%80%E5%B9%85%E4%B8%89%E8%A7%92%E6%9D%BF%E4%B8%AD%E7%9A%84%E4%B8%A4%E5%9D%97%E7%9B%B4%E8%A7%92%E4%B8%89%E8%A7%92%E5%B0%BA%E7%9A%84%E7%9B%B4%E8%A7%92%E9%A1%B6%E7%82%B9c%E6%8C%89%E5%A6%82%E5%9B%BE%E6%96%B9%E5%BC%8F%E5%8F%A0%E6%94%BE%E5%9C%A8%E4%B8%80%E8%B5%B7%EF%BC%9A%E4%B8%89%E8%A7%92%E5%B0%BAACD%E4%B8%8D%E5%8A%A8%2C%E5%B0%86%E4%B8%89%E8%A7%92%E5%B0%BABCE%E7%9A%84CE%E8%BE%B9%E4%B8%8ECA%E8%BE%B9%E9%87%8D%E5%90%88%2C%E7%84%B6%E5%90%8E%E7%BB%95%E7%82%B9C%E6%8C%89%E9%A1%BA%E6%97%B6%E9%92%88%E6%88%96%E9%80%86%E6%97%B6%E9%92%88.%E6%96%B9%E5%90%91%E4%BB%BB%E6%84%8F%E8%BD%AC%E5%8A%A8%E4%B8%80%E4%B8%AA%E8%A7%92%E5%BA%A6%2C%E5%BD%93%E2%88%A0ACE%EF%BC%88o%C2%B0%EF%BC%9C%E2%88%A0ACE%EF%BC%9C90)
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