Eight edges and five corners
5 corners 8 edges
10 edges 6 corners
By "corners", do you mean vertices or edges?
A pyramid with a rectangular (square) base has:Eight edges,Five vertexes (corners)Five faces
A triangular-based pyramid has 4 corners, 4 faces and 6 edges.
Faces = 8 Edges = 14 Corners = 8
6 6
A pyramid with 8 edges has 5 faces, 5 corners and (of course) 8 edges.
4 corners 6 edges 4 faces
5 corners, 8 edges and 5 faces
There are lots of different types of pyramids but a square based pyramid has 5 faces, 5 corners and 8 edges