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
Well, honey, I hate to break it to you, but that solid you're talking about is a triangular prism. It's got 17 faces, 15 edges, and 10 vertices. So, there you have it - a triangular prism strutting its stuff with all those faces, edges, and vertices.
Triangular prism
A quadrilateral based pyramid.
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.
A tetrahedron has 4 vertices's, 6 edges, and 4 faces. Each face is a triangle.It looks like a triangle based pyramid.