在等腰梯形ABCD中,AB//DC,角A=45度,AB=10cm,CD=4cm.等腰直角三角形PMN的斜边MN=10cm,A点于N点重合,M等腰直角三角形PMN的斜边MN=10cm,A点于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PM
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![在等腰梯形ABCD中,AB//DC,角A=45度,AB=10cm,CD=4cm.等腰直角三角形PMN的斜边MN=10cm,A点于N点重合,M等腰直角三角形PMN的斜边MN=10cm,A点于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PM](/uploads/image/z/6633934-70-4.jpg?t=%E5%9C%A8%E7%AD%89%E8%85%B0%E6%A2%AF%E5%BD%A2ABCD%E4%B8%AD%2CAB%2F%2FDC%2C%E8%A7%92A%3D45%E5%BA%A6%2CAB%3D10cm%2CCD%3D4cm.%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%BA%8EN%E7%82%B9%E9%87%8D%E5%90%88%2CM%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%BA%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%A2PM)
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