a rectangular based pyramid has got 6 edges and four faces and four vertices.
12 faces * * * * * Correct as far as it goes, but incomplete. 20 vertices 30 edges
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 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
An octahedron has8 faces, 12 to 18 edges and 6 to 12 edges.
A cuboid has 8 vertices, 12 edges and 6 faces
A quadrilateral based pyramid.
Triangular prism
Never heard of it. Do you mean HEMIsphere? That's got one edge, which is a circle. Cut an orange in half across the middle and you'll have two hemispheres, close enough.
A prism with an n-sided base will have 2n vertices, n + 2 faces, and 3n edges.
A prism with an n-sided base will have 2n vertices, n + 2 faces, and 3n edges.
How many faces of cuboid
A pyramid is a generic term used to describe a polyhedron with a polygonal base and a number of triangles rising from that base to meet at an apex. If you include the base, a pyramid whose base is a polygon with n-sides (or vertices) has n+1 faces, n+1 vertices and 2n edges, where n >= 3.