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“空间几何题的三视图”是髙中数学新课程的新增内容之一,也是近几年高考的热点内容,主要题型就是给出几何体的三视图,计算几何体的面积和体积等相关量.学生丢分的主要原因是不能由三视图还原为几何体,画出相应的直观图.快速、准确地解决三视图还原问题,首先要掌握简单几何体的三视图.对正方体、长方体、三棱柱、四棱柱、三棱锥、四棱锥、圆柱、圆锥、圆台和球的三视图分别是什么药熟悉并掌
“Spatial geometry of the three views ” is one of the new content of the new mathematics curriculum, is also a hot topic in recent years college entrance examination, the main problem is to give the geometry of the three views, calculate the geometry of the area and volume Related amount.Students drop the main reason is that the three views can not be reduced to geometry, draw the corresponding visual map.Quickly and accurately solve the three-view reduction problem, we must first grasp the simple geometry of the three views of the cube, cuboid, three Prism, quadrangular prism, triangular pyramid, quadrangular pyramid, cylinder, cone, round table and the ball of the three views are what medicine are familiar and palm