以知两点A(-1,3).B(3,1)点C在坐标轴上,若∠ACB=90°,则符合条件的C点有几个?
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![以知两点A(-1,3).B(3,1)点C在坐标轴上,若∠ACB=90°,则符合条件的C点有几个?](/uploads/image/z/13058847-63-7.jpg?t=%E4%BB%A5%E7%9F%A5%E4%B8%A4%E7%82%B9A%28-1%2C3%29.B%283%2C1%29%E7%82%B9C%E5%9C%A8%E5%9D%90%E6%A0%87%E8%BD%B4%E4%B8%8A%2C%E8%8B%A5%E2%88%A0ACB%3D90%C2%B0%2C%E5%88%99%E7%AC%A6%E5%90%88%E6%9D%A1%E4%BB%B6%E7%9A%84C%E7%82%B9%E6%9C%89%E5%87%A0%E4%B8%AA%3F)
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