Summary of Polyhedral Solids平面立体概述 Polyhedral solids:The solids that are surrounded by planes are called polyhedral solids. 平面立体： 完全由平面围成的立体称为平面立体。 Prisms Polyhedral solids 棱柱 平面立体 Pyramids 棱锥 Intersection lines of edge planes are called edge lines.Intersection lines of edge planes and bases are called base edge lines.When drawing projections of polyhedral solids,we are actually drawing the projections of all edge lines and base edge lines followed by a visibility test of the projected edge lines and base edge lines. 各棱面的交线称为棱线，棱面与底面的交线称为底边画平面立 体的按影瘤，实质是画出所有棱线和底边的投影，并判别其可见性。 请点击鼠标左键显示后面内容2 Summary of Polyhedral Solids 平面立体概述 Prisms 棱柱 Intersection lines of edge planes are called edge lines. Intersection lines of edge planes and bases are called base edge lines. When drawing projections of polyhedral solids, we are actually drawing the projections of all edge lines and base edge lines followed by a visibility test of the projected edge lines and base edge lines. 各棱面的交线称为棱线,棱面与底面的交线称为底边,画平面立 体的投影图,实质是画出所有棱线和底边的投影,并判别其可见性。 Pyramids 棱锥 Polyhedral solids 平面立体 请点击鼠标左键显示后面内容 Polyhedral solids: The solids that are surrounded by planes are called polyhedral solids. 平面立体: 完全由平面围成的立体称为平面立体