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几何体的平面展开图或三视图(从不同方向看几何体所得到的平面图形),是借助平面图形认识几何体的两种方法.下面对相关考点进行例析.考点1:对图形的认识把从实物中抽象出的各种图形统称为几何图形.点、线、面、体是图形的基本要素.有些几何图形的各个部分都在同一平面内,它们是平面图形.有些几何图形的各部分不都在同一平面
The geometric expansion of the plane or three views of the plane (geometry from different directions to see the plane of the graphics), is to know the geometry of the two ways by plane graphics.RelationresultThe following test sites.Examination 1: understanding of graphics from All kinds of graphics abstracted from the physical objects are collectively referred to as geometric graphics. Point, line, surface, body is the basic elements of the graphics. Some of the geometry of the various parts are in the same plane, they are planar graphics. All in the same plane