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在立体几何教学过程中,教给学生一些基本的绘图方法,使他们具有初步的读图和绘图的知识和技能,这对于发展他们的空间想象力,以及中学毕业后参加生产劳动,都是有好处的。今将高中立体几何课本中有关的绘图知识介绍如下,供大家研究参考。1.直观图画法的规则和性质按照习惯,我们把垂直于观察者的视线的平面叫做铅垂面,放在水平位置的平面叫做水平面,垂直于观察者的视线并在水平面内的直线叫做水平线。任何一个主体图形,总有一部分在铅垂面内,同时也总有一部分在水平面内。借助
In the teaching of stereoscopic geometry, students are taught some basic drawing methods that give them initial knowledge of reading and drawing skills and skills, both for developing their spatial imagination and for participating in productive labor after graduating from high school Benefit. This high school three-dimensional geometry textbooks related to the drawing of the knowledge as follows, for your reference. 1. Rules and Properties of Intuitive Drawing Method By convention, we refer to the plane perpendicular to the viewer's line of sight as the vertical plane. The horizontal plane is called the horizontal plane. The line perpendicular to the observer's line of sight and in the horizontal plane is called Horizontal line. Any one of the main figure, there is always a part of the vertical plane, but also always have some in the horizontal plane. With