The number of edges of a pyramid is twice the number of edges of the base. A triangle-based pyramid has six edges, 3 × 2 = 6. ... 3D shapes and nets. count. 4 of 4. Properties of triangles. count ...

Pyramid Sometimes they have a triangular shaped base and sometimes they have square shaped bases. Everyday things that have the shape of a pyramid include rooftops, buildings and paperweights.