A three-dimensional (3D) shape is a solid shape ... had the same number of vertices as faces? Do you think that all 3D shapes have the same number of vertices and faces? Test the theory - count ...

Learning got hands-on and a little sticky in Mrs. Freilinger’s 1st grade class at Higgins Elementary as students explored 3D ...

A two-dimensional or 2D shape ... and 3 vertices (corners). A vertex is where two lines meet or join. There are different kinds of triangles. These triangles have sides that are all the same ...

For most of us, or perhaps all of us, it's impossible to imagine a world consisting of more than three spatial ... of the sphere, the shape before him is that of a two-dimensional circle.