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如何画椭圆形
人气:222 ℃ 时间:2020-04-05 09:19:01
解答
常用的椭圆近似画法为四圆弧法,即用四段圆弧连接起来的图形近似代替椭圆,如果已知椭圆的长,短轴分别为AB,CD,则其近似画法的步骤如下:1、 连AC,以O为圆心,OA为半径画圆弧交CD延长线于E,再以C为圆心,CE为半径画弧交AC...
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