≤在等腰梯形ABCD中,AB‖CD,∠A=45°,AB=10CM,CD=4CM,等腰直角三角形PMN的斜边MN=10CM,A点与N点重合,MN和AB在一条直线上,设等腰梯形ABCD不动,等腰直角三角形PMN沿AB所在直线以1CM/S的速度向右移动,直到
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![≤在等腰梯形ABCD中,AB‖CD,∠A=45°,AB=10CM,CD=4CM,等腰直角三角形PMN的斜边MN=10CM,A点与N点重合,MN和AB在一条直线上,设等腰梯形ABCD不动,等腰直角三角形PMN沿AB所在直线以1CM/S的速度向右移动,直到](/uploads/image/z/3139891-43-1.jpg?t=%E2%89%A4%E5%9C%A8%E7%AD%89%E8%85%B0%E6%A2%AF%E5%BD%A2ABCD%E4%B8%AD%2CAB%E2%80%96CD%2C%E2%88%A0A%3D45%C2%B0%2CAB%3D10CM%2CCD%3D4CM%2C%E7%AD%89%E8%85%B0%E7%9B%B4%E8%A7%92%E4%B8%89%E8%A7%92%E5%BD%A2PMN%E7%9A%84%E6%96%9C%E8%BE%B9MN%3D10CM%2CA%E7%82%B9%E4%B8%8EN%E7%82%B9%E9%87%8D%E5%90%88%2CMN%E5%92%8CAB%E5%9C%A8%E4%B8%80%E6%9D%A1%E7%9B%B4%E7%BA%BF%E4%B8%8A%2C%E8%AE%BE%E7%AD%89%E8%85%B0%E6%A2%AF%E5%BD%A2ABCD%E4%B8%8D%E5%8A%A8%2C%E7%AD%89%E8%85%B0%E7%9B%B4%E8%A7%92%E4%B8%89%E8%A7%92%E5%BD%A2PMN%E6%B2%BFAB%E6%89%80%E5%9C%A8%E7%9B%B4%E7%BA%BF%E4%BB%A51CM%EF%BC%8FS%E7%9A%84%E9%80%9F%E5%BA%A6%E5%90%91%E5%8F%B3%E7%A7%BB%E5%8A%A8%2C%E7%9B%B4%E5%88%B0)
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