First step - draw a diagram of the two shapes you are comparing.

A trangular pyramid has a triangular base with three triangles joining at a top vertex.

A triangular prism has a triangle at each base, joined with paralell lines (between which, rectangular shapes are created)

I hope this helps.

A trangular pyramid has a triangular base with three triangles joining at a top vertex.

**so it has 4 vertices in total.**A triangular prism has a triangle at each base, joined with paralell lines (between which, rectangular shapes are created)

**so each triangle creates 3 vertices, so a triangular prism has six vertices in total.**__the prism has 2 more vertices than a triangular pyramid.__I hope this helps.