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如何画平面直角坐标系

更新时间: 2020-09-24 00:00:00     

在平面内画两条互相垂直并且原点重合的数轴。水平的数轴叫横轴,取向右方向为正方向;垂直的数轴叫纵轴,取向上方为正方向;两轴交点O为原点。

关键词: 如何 平面 直角 坐标系

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