Plane Shapes and Solid Figures

Learning about plane shapes and solid figures is fun. Plane shapes have less angles than solid figures. I know that plane shapes have different names than solid figures. You can trace a solid figure and you'll get a plane shape. A sphere will roll. A cube won't roll because a cube has eight flat surfaces. If you trace a pyramid, you'll get two shapes triangle, and a square. A rectangular prism has the same angles and flat surfaces as a cube.  I like solid figures because I think they are fun to use.   
Alex