A quadrilateral based pyramid.
Triangular prism
a rectangular based pyramid has got 6 edges and four faces and four vertices.
Pentagonal (not pentaginal). 7 faces 15 edges 10 vertices
12 faces * * * * * Correct as far as it goes, but incomplete. 20 vertices 30 edges
none
An octahedron has8 faces, 12 to 18 edges and 6 to 12 edges.
A cuboid has 8 vertices, 12 edges and 6 faces
Triangular prism.
A prism with an n-sided base will have 2n vertices, n + 2 faces, and 3n edges.
A triangular pyramid, also called a tetrahedron.
A prism with an n-sided base will have 2n vertices, n + 2 faces, and 3n edges.
How many faces of cuboid