如图,直角梯形OABC的直角顶点O是坐标原点,边OA,OC分别在x轴、y轴的正半轴上,OA∥BC,D是BC上一点,BD= OA= ,AB=3,∠OAB=45°,E、F分别是线段OA、AB上的两动点,且始终保持∠DEF=45°.(1)直接写出D点的坐
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![如图,直角梯形OABC的直角顶点O是坐标原点,边OA,OC分别在x轴、y轴的正半轴上,OA∥BC,D是BC上一点,BD= OA= ,AB=3,∠OAB=45°,E、F分别是线段OA、AB上的两动点,且始终保持∠DEF=45°.(1)直接写出D点的坐](/uploads/image/z/3797350-70-0.jpg?t=%E5%A6%82%E5%9B%BE%2C%E7%9B%B4%E8%A7%92%E6%A2%AF%E5%BD%A2OABC%E7%9A%84%E7%9B%B4%E8%A7%92%E9%A1%B6%E7%82%B9O%E6%98%AF%E5%9D%90%E6%A0%87%E5%8E%9F%E7%82%B9%2C%E8%BE%B9OA%2COC%E5%88%86%E5%88%AB%E5%9C%A8x%E8%BD%B4%E3%80%81y%E8%BD%B4%E7%9A%84%E6%AD%A3%E5%8D%8A%E8%BD%B4%E4%B8%8A%2COA%E2%88%A5BC%2CD%E6%98%AFBC%E4%B8%8A%E4%B8%80%E7%82%B9%2CBD%3D+OA%3D+%2CAB%3D3%2C%E2%88%A0OAB%3D45%C2%B0%2CE%E3%80%81F%E5%88%86%E5%88%AB%E6%98%AF%E7%BA%BF%E6%AE%B5OA%E3%80%81AB%E4%B8%8A%E7%9A%84%E4%B8%A4%E5%8A%A8%E7%82%B9%2C%E4%B8%94%E5%A7%8B%E7%BB%88%E4%BF%9D%E6%8C%81%E2%88%A0DEF%3D45%C2%B0%EF%BC%8E%EF%BC%881%EF%BC%89%E7%9B%B4%E6%8E%A5%E5%86%99%E5%87%BAD%E7%82%B9%E7%9A%84%E5%9D%90)
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