Exercise.Complete each drawing by adding the missing detail. 补全回转体及其表面上各点的H、W面投影。 (1)Draw a cone and get points on surface.(2)Draw a sphere and get points on surface. 画圆锥及各点的三投影 画圆球及各点的三投影 b 解答 请点击解答显示其内容 解答 石同a同 9 Exercise. Complete each drawing by adding the missing detail. 补全回转体及其表面上各点的H、W面投影。 a' c' （1）Draw a cone and get points on surface. 画圆锥及各点的三投影 b' （2）Draw a sphere and get points on surface. 画圆球及各点的三投影 c' b' (a' ) a c" (a") b" c b a a" (b) (b") c c" 请点击解答显示其内容