平面几何作图限制只能用直尺、圆规,而这里所谓的直尺是指没有刻度只能画直线的尺。用直尺与圆规当然可以做出许多种之图形,但有些图形如正七边形、正九边形就做不出来。有些问题看起来好像很简单,但真正做出来却很困难,这些问题之中最有名的就是所谓的三大问题。
... Process ( 设计过程 ),3、Drawing Instruments(绘图仪器),4、Lettering(文字),5、Geometric Construction(几何作图),6、Orthographic Sketc..
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... generatrix母线 ¿ geometric c construction几何作图 geometric c figure几何图形 ...
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几何作图法 [数] geometrograph
几何作图的不兼容性 inconsistency of geometrical construction
年中考几何作图题赏析 Middle School Students Science Monthly
非欧几何作图 non-euclidean geometry drawing
作图几何学 [数] constructive geometry
系列几何图像制作插件 VC
几何法字图操作 alpha-geometric operation
探讨了一种利用平面迹线和几何作图法,作无灭光线下透视阴影的新方法。
This paper presents a new method of drawing perspective shade and shadow in parallel rays, which makes use of plane trace and geometrical drawing method.
对过椭圆外一定点的法线作图问题作了探讨,指出了几何作图法的不可解性。
This paper discusses the graphic problem of ellipse normal through a point outside the ellipse. Concluded are the unsolvability of geometric graphic method to solve this problem .
本文从互为对偶的电网络的线图矩阵间关系的分析,得出求作对偶电网络的矩阵法。它异于常用的几何作图法。
After analyzing the relations between graph matrices of dual electrical network a method of plotting the latter which is different from usual geometrically drawing method is presented in this paper.
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