初二一道较难的数学问题,请高人解析,谢谢.(2006•常德)把两块全等的直角三角形ABC和DEF叠放在一起,使三角板DEF的锐角顶点D与三角板ABC的斜边中点O重合,其中∠ABC=∠DEF=90°,∠C=∠F=45
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![初二一道较难的数学问题,请高人解析,谢谢.(2006•常德)把两块全等的直角三角形ABC和DEF叠放在一起,使三角板DEF的锐角顶点D与三角板ABC的斜边中点O重合,其中∠ABC=∠DEF=90°,∠C=∠F=45](/uploads/image/z/5903849-65-9.jpg?t=%E5%88%9D%E4%BA%8C%E4%B8%80%E9%81%93%E8%BE%83%E9%9A%BE%E7%9A%84%E6%95%B0%E5%AD%A6%E9%97%AE%E9%A2%98%2C%E8%AF%B7%E9%AB%98%E4%BA%BA%E8%A7%A3%E6%9E%90%2C%E8%B0%A2%E8%B0%A2.%EF%BC%882006%26%238226%3B%E5%B8%B8%E5%BE%B7%EF%BC%89%E6%8A%8A%E4%B8%A4%E5%9D%97%E5%85%A8%E7%AD%89%E7%9A%84%E7%9B%B4%E8%A7%92%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E5%92%8CDEF%E5%8F%A0%E6%94%BE%E5%9C%A8%E4%B8%80%E8%B5%B7%EF%BC%8C%E4%BD%BF%E4%B8%89%E8%A7%92%E6%9D%BFDEF%E7%9A%84%E9%94%90%E8%A7%92%E9%A1%B6%E7%82%B9D%E4%B8%8E%E4%B8%89%E8%A7%92%E6%9D%BFABC%E7%9A%84%E6%96%9C%E8%BE%B9%E4%B8%AD%E7%82%B9O%E9%87%8D%E5%90%88%EF%BC%8C%E5%85%B6%E4%B8%AD%E2%88%A0ABC%3D%E2%88%A0DEF%3D90%C2%B0%EF%BC%8C%E2%88%A0C%3D%E2%88%A0F%3D45)
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