Pyramid 棱锥 1.Projection of pyramid 棱锥的投影 Class by the bases of a pyramid根据棱锥底面形状可分为： Triangular pyramid Square pyramid Pentagonal pyramid 】Hexagonal pyramid 三棱锥 四棱锥 五棱锥 六棱锥 Draw steps画图步骤： 1.Draw symmetry lines and the base of the pyramid. 先画锥底面形状的投影； 2.Add the vertex of the pyramid. 再画锥顶点的投影； 3.Complete three views after adding lines for the side faces.最后画各棱线的投影。 请点击鼠标左键显示后面内容 5 Class by the bases of a pyramid 根据棱锥底面形状可分为: Triangular pyramid 三棱锥 1. Projection of pyramid 棱锥的投影 Square pyramid 四棱锥 Pentagonal pyramid 五棱锥 Hexagonal pyramid 六棱锥 Draw steps画图步骤： 1.Draw symmetry lines and the base of the pyramid. 先画锥底面形状的投影; 2.Add the vertex of the pyramid. 再画锥顶点的投影; 3.Complete three views after adding lines for the side faces. 最后画各棱线的投影。 请点击鼠标左键显示后面内容 Pyramid 棱锥