A rectangle has four of each.
There are 12 edges and 8 corners in a rectangular prism
8 corners and 12 edges.
One has 6 faces, 8 edges and 8 corners.
6 faces 8 corners and 12 edges
It has 8 corners, 6 faces and 12 edges
A triangle has 3 sides (or edges) and 3 corners (or angles)
No sides or corners
3 corners (vertices) and 3 edges (sides).
8 edges 6 sides
A pyramid with a rectangular (square) base has:Eight edges,Five vertexes (corners)Five faces
A triangle has 3 sides (edges) and three vertices (corners)
A square has 4 sides and 4 vertices (corners).