Properties of 3D shapes

Last week we were learning about what a tetrahedron is and what a 3D shape is. A 3D shape is different from normal shapes, it is because a 3D shape is like your holding something and a 2D shape is really flat. Today we were learning about the properties of a 3 dimensional shape. We had to make a presentaion of 3 dimensional shapes we know. We were looking at a Tetrahedron, Cube and Pyramids. We had to write how many Faces, Vertices and Edges that the 3 dimensional shapes have.