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学习几何的过程中正确地画出几何图形非常重要.因为正确地画出各角的大小、各线段的大小及位置关系有助于认识图形,有助于分析图形的关系找到解题的思路.常见的画几何图形的问题有以下几类:1.画出已知图形的对称图形.2.画出已知图形按某一要求旋转后的图形.3.利用尺规作一个角等于已知角,作一条线段等于已知线段,作一个角的平分线,作一条线段的垂直平分线.4.按某些要求画出几何图形.画几何图形的实质是要认识几何图形的性质.例1作图,请你在下图中作(?)出一个以线段AB为一边的等边
It is very important to correctly draw the geometry during the process of learning geometry, because the correct size of each corner is drawn, the size and position of each line helps to understand the figure and helps to analyze the relationship between the figures to find the solution. The common problem of drawing geometry in the following categories: 1. draw the known graphics symmetrical graphics .2 draw the known graphics according to a certain request after the rotation of the graphics .3 use rulers for a corner equal to the known Corner, make a line segment equal to the known line segment, make a corner bisector, make a vertical bisector of the line segment .4. Draw the geometry according to some requirements. The essence of the geometry is to understand the nature of the geometry. 1 drawing, please do in the figure below (?) Out of a line segment AB side of the equilateral