10
A tetrahedron which is a triangular based pyramid has 6 edges, 4 faces and 4 vertices.
It's an Isoceles terahedron. Pheew! I too needed to know!
10 faces 10 faces
no faces
A trapezoid is a quadrilateral and has four faces.
A hexahedron has 6 faces.
Twelve faces.
it has six faces
6 faces
3 faces
20 faces