三点如何快速确定一个圆 三点怎么确定一个圆
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随便找两条边,通过每条边的中心做垂线,两条垂线的焦点就是圆心,以此点为圆心,以此点到任意一点的距离为半径画圆就是了将三个点连接起来,做新三角形每个角的角平分线,交于一点,以此点为圆心以此点到任意一顶点距离为半径做圆即可。
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