已知长方形ABCD的长AB=9,AD=3,现将此长方形置与平面直角坐标系中,使AB在X轴的正半轴,经过点C的直线y=½x-2与x轴交与点c,与y轴交与点f(1)求点e,b,d,a的坐标2.求四边形AECD的面积
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![已知长方形ABCD的长AB=9,AD=3,现将此长方形置与平面直角坐标系中,使AB在X轴的正半轴,经过点C的直线y=½x-2与x轴交与点c,与y轴交与点f(1)求点e,b,d,a的坐标2.求四边形AECD的面积](/uploads/image/z/4043097-9-7.jpg?t=%E5%B7%B2%E7%9F%A5%E9%95%BF%E6%96%B9%E5%BD%A2ABCD%E7%9A%84%E9%95%BFAB%3D9%2CAD%3D3%2C%E7%8E%B0%E5%B0%86%E6%AD%A4%E9%95%BF%E6%96%B9%E5%BD%A2%E7%BD%AE%E4%B8%8E%E5%B9%B3%E9%9D%A2%E7%9B%B4%E8%A7%92%E5%9D%90%E6%A0%87%E7%B3%BB%E4%B8%AD%2C%E4%BD%BFAB%E5%9C%A8X%E8%BD%B4%E7%9A%84%E6%AD%A3%E5%8D%8A%E8%BD%B4%2C%E7%BB%8F%E8%BF%87%E7%82%B9C%E7%9A%84%E7%9B%B4%E7%BA%BFy%3D%26%23189%3Bx-2%E4%B8%8Ex%E8%BD%B4%E4%BA%A4%E4%B8%8E%E7%82%B9c%2C%E4%B8%8Ey%E8%BD%B4%E4%BA%A4%E4%B8%8E%E7%82%B9f%281%29%E6%B1%82%E7%82%B9e%2Cb%2Cd%2Ca%E7%9A%84%E5%9D%90%E6%A0%872.%E6%B1%82%E5%9B%9B%E8%BE%B9%E5%BD%A2AECD%E7%9A%84%E9%9D%A2%E7%A7%AF)
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