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(window.slotbydup=window.slotbydup || []).push({
id: '8096091',
container: s,
size: '580,90',
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中垂线的尺规作图:分别以线段两个端点为圆心,以大于线段长度一半的长度为半径,在线段两端做两个等半径的弧,连接两个端点所做弧的交点所成的直线,即为这条线段的中垂线 (责任编辑:admin) |