Faces, Edges, Vertices
About this exercise
Counting the flat surfaces of a solid.
Example problems
A few of the problems this exercise asks. The printable worksheet holds ten fresh ones.
- How many faces does a Triangular Pyramid have?
- How many faces does a Cone have?
- How many faces does a Sphere have?
- How many faces does a Rectangular Prism have?
Try it yourself first — open a section below only if you get stuck.
How to solve it
Work round systematically: top, bottom, then the sides. A cube has 6 and a triangular prism has 5.
Worked example
A square-based pyramid has one square and four triangles, so five faces.
Common mistake
Forgetting the base. It is the face you cannot see in most drawings.