1.等腰梯形的底角为45°,高等于上底,下底长为9,那么梯形的腰长为?2.如图,在直角梯形ABCD中,底边AB=13,CD=8,AD⊥AB且AD=12,则点A到BC边的距离为?图:http://hi.baidu.com/%B7%E7%C1%E5%B0%E3%B5%C4%B4%BF%D1%A9/album/it
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![1.等腰梯形的底角为45°,高等于上底,下底长为9,那么梯形的腰长为?2.如图,在直角梯形ABCD中,底边AB=13,CD=8,AD⊥AB且AD=12,则点A到BC边的距离为?图:http://hi.baidu.com/%B7%E7%C1%E5%B0%E3%B5%C4%B4%BF%D1%A9/album/it](/uploads/image/z/225690-42-0.jpg?t=1.%E7%AD%89%E8%85%B0%E6%A2%AF%E5%BD%A2%E7%9A%84%E5%BA%95%E8%A7%92%E4%B8%BA45%C2%B0%2C%E9%AB%98%E7%AD%89%E4%BA%8E%E4%B8%8A%E5%BA%95%2C%E4%B8%8B%E5%BA%95%E9%95%BF%E4%B8%BA9%2C%E9%82%A3%E4%B9%88%E6%A2%AF%E5%BD%A2%E7%9A%84%E8%85%B0%E9%95%BF%E4%B8%BA%3F2.%E5%A6%82%E5%9B%BE%2C%E5%9C%A8%E7%9B%B4%E8%A7%92%E6%A2%AF%E5%BD%A2ABCD%E4%B8%AD%2C%E5%BA%95%E8%BE%B9AB%3D13%2CCD%3D8%2CAD%E2%8A%A5AB%E4%B8%94AD%3D12%2C%E5%88%99%E7%82%B9A%E5%88%B0BC%E8%BE%B9%E7%9A%84%E8%B7%9D%E7%A6%BB%E4%B8%BA%3F%E5%9B%BE%EF%BC%9Ahttp%3A%2F%2Fhi.baidu.com%2F%25B7%25E7%25C1%25E5%25B0%25E3%25B5%25C4%25B4%25BF%25D1%25A9%2Falbum%2Fit)
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