Minecraft wiki entry for Creating_shapes, associated text: 1 Usage and Basics
2 Angled lines
3 2-dimensional shapes
3.1 Right Triangle
3.1.1 Right triangle extensions
3.2 Equilateral Triangle
3.3 Parabolas
3.4 Circles
4 3-dimensional shapes
4.1 Sphere
4.2 Pyramid
4.3 Cone
5 Trivia
6 See also