1.已知点A(a,2),B(-3.b),求a,b的值:AB平行Y轴2.如图,有一块三角形空地,AB=AC=10m,做AB的垂直平分线ED交AC于点D,交AB于点E,量得△BDC的周长为17m,BC的长?
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![1.已知点A(a,2),B(-3.b),求a,b的值:AB平行Y轴2.如图,有一块三角形空地,AB=AC=10m,做AB的垂直平分线ED交AC于点D,交AB于点E,量得△BDC的周长为17m,BC的长?](/uploads/image/z/7143092-44-2.jpg?t=1.%E5%B7%B2%E7%9F%A5%E7%82%B9A%EF%BC%88a%2C2%EF%BC%89%2CB%EF%BC%88-3.b%EF%BC%89%2C%E6%B1%82a%2Cb%E7%9A%84%E5%80%BC%EF%BC%9AAB%E5%B9%B3%E8%A1%8CY%E8%BD%B42.%E5%A6%82%E5%9B%BE%2C%E6%9C%89%E4%B8%80%E5%9D%97%E4%B8%89%E8%A7%92%E5%BD%A2%E7%A9%BA%E5%9C%B0%2CAB%3DAC%3D10m%2C%E5%81%9AAB%E7%9A%84%E5%9E%82%E7%9B%B4%E5%B9%B3%E5%88%86%E7%BA%BFED%E4%BA%A4AC%E4%BA%8E%E7%82%B9D%2C%E4%BA%A4AB%E4%BA%8E%E7%82%B9E%2C%E9%87%8F%E5%BE%97%E2%96%B3BDC%E7%9A%84%E5%91%A8%E9%95%BF%E4%B8%BA17m%2CBC%E7%9A%84%E9%95%BF%3F)
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