已知平行四边形ABCD中AB‖CD,BC‖AD,且B(2.-1),C(4,2),D(2,3),求A点的坐标已知平行四边形ABCD中AB‖CD,BC‖AD,且B(2.-1),C(4,2),D(2,3),求A点的坐标
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![已知平行四边形ABCD中AB‖CD,BC‖AD,且B(2.-1),C(4,2),D(2,3),求A点的坐标已知平行四边形ABCD中AB‖CD,BC‖AD,且B(2.-1),C(4,2),D(2,3),求A点的坐标](/uploads/image/z/10431176-32-6.jpg?t=%E5%B7%B2%E7%9F%A5%E5%B9%B3%E8%A1%8C%E5%9B%9B%E8%BE%B9%E5%BD%A2ABCD%E4%B8%ADAB%E2%80%96CD%2CBC%E2%80%96AD%2C%E4%B8%94B%282.-1%29%2CC%284%2C2%29%2CD%282%2C3%29%2C%E6%B1%82A%E7%82%B9%E7%9A%84%E5%9D%90%E6%A0%87%E5%B7%B2%E7%9F%A5%E5%B9%B3%E8%A1%8C%E5%9B%9B%E8%BE%B9%E5%BD%A2ABCD%E4%B8%ADAB%E2%80%96CD%2CBC%E2%80%96AD%2C%E4%B8%94B%282.-1%29%2CC%284%2C2%29%2CD%282%2C3%29%2C%E6%B1%82A%E7%82%B9%E7%9A%84%E5%9D%90%E6%A0%87)
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