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
Oh, dude, a circular prism? That's like a fancy way of saying a cylinder with a polygonal base. So, it has two faces - the circular ones at the top and bottom, and then all those curved edges around the sides. And don't forget about the vertices, which are basically the corners where the edges meet. So, yeah, it's got 0 vertices because there are no corners on a curve, but hey, who's counting?
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.
Oh, dude, a circular prism? That's like a fancy way of saying a cylinder with a polygonal base. So, it has two faces - the circular ones at the top and bottom, and then all those curved edges around the sides. And don't forget about the vertices, which are basically the corners where the edges meet. So, yeah, it's got 0 vertices because there are no corners on a curve, but hey, who's counting?
A prism with an n-sided base will have 2n vertices, n + 2 faces, and 3n edges.