Triangles are 2D shape it has 3 vertices 3 sides. Circle are 2D shape it has 0 vertices 0 sides . Rectangle is a 2D shape. square is a 2D shape it has 4 vertices 4 sides . sphere Is a 3D shape with 0 vertices 0 faces it can roll it cant slide and it cant stack. Cubes have 6 vertices and it has 8 faces it cant roll and it can slide it can stack. I had lots of fun learning about objects and shapes!