初二代数与几何综合题,如图1,在平面直角坐标系中,直线y=-1/2x+m(m>0)与x轴,y轴分别交于点A,B,过点A作x轴垂线交直线y=x于点D,C点坐标(m,0),连接CD.(1)求证:CD⊥AB;(2)连接BC交OD于点H(如图2),
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![初二代数与几何综合题,如图1,在平面直角坐标系中,直线y=-1/2x+m(m>0)与x轴,y轴分别交于点A,B,过点A作x轴垂线交直线y=x于点D,C点坐标(m,0),连接CD.(1)求证:CD⊥AB;(2)连接BC交OD于点H(如图2),](/uploads/image/z/5431357-37-7.jpg?t=%E5%88%9D%E4%BA%8C%E4%BB%A3%E6%95%B0%E4%B8%8E%E5%87%A0%E4%BD%95%E7%BB%BC%E5%90%88%E9%A2%98%2C%E5%A6%82%E5%9B%BE1%2C%E5%9C%A8%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%E7%9B%B4%E7%BA%BFy%3D-1%2F2x%2Bm%28m%3E0%29%E4%B8%8Ex%E8%BD%B4%2Cy%E8%BD%B4%E5%88%86%E5%88%AB%E4%BA%A4%E4%BA%8E%E7%82%B9A%2CB%2C%E8%BF%87%E7%82%B9A%E4%BD%9Cx%E8%BD%B4%E5%9E%82%E7%BA%BF%E4%BA%A4%E7%9B%B4%E7%BA%BFy%3Dx%E4%BA%8E%E7%82%B9D%2CC%E7%82%B9%E5%9D%90%E6%A0%87%28m%2C0%29%2C%E8%BF%9E%E6%8E%A5CD.%EF%BC%881%EF%BC%89%E6%B1%82%E8%AF%81%EF%BC%9ACD%E2%8A%A5AB%EF%BC%9B%EF%BC%882%EF%BC%89%E8%BF%9E%E6%8E%A5BC%E4%BA%A4OD%E4%BA%8E%E7%82%B9H%EF%BC%88%E5%A6%82%E5%9B%BE2%EF%BC%89%2C)
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