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本文介绍圆、线类图形手算坐标点用的一种数据处理方法。用这种方法处理数据具有分析图形思路清楚、简便,记录数据少,计算公式简单、灵活、易记和用一般函数型电子计算器即能处理等优点。本文在讲到直线和圆时都具有一定的走向,我们把这种具有一定走向的直线和圆分别称为有向直线和有向圆。我们把有向直线和有向圆统称为几何元素。有向直线中两点之间的部分称为有向线段。有向圆中两点之间的部分称为有向圆弧。
This article describes a circular, line graphics coordinate point of a hand-used data processing method. With this method of processing data with the analysis of graphic ideas clear, simple, less data, the formula is simple, flexible, easy to remember and use the general function of the electronic calculator that can handle the advantages. In this paper, when it comes to the straight line and the circle have a certain trend, we have this straight line and the circle with a certain direction are called directed straight line and directed circle. We refer to directed straight lines and directed circles as geometric elements. The part between two points in a directed line is called a directed line segment. The part between two points in a directed circle is called a directed arc.