The 3D solid ... placed 2D objects that can form a flowing surface such as the wing of an airplane, as shown in the bottom of Figure 6.26. Figure 6.26: The closed polylines on the left can be used to ...

NARRATOR: Finally, what about the sphere? So, faces? Well, just the one. Edges? Zero. Vertices? None. Oh dear! Oh well. The spheres are disappointed and one is angry. 3D shapes have faces (sides ...

2D shapes are boring. Ah! Not really. But got your attention. Now. 3D shapes, they have 3 dimensions ... And a circle becomes a sphere with just one large, curved face, like a ball.