There are eight edges in a square based pyramid. There are also five faces and five vertices in square based pyramids.
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A square pyramid, or square-based pyramid, has 5 faces and 8 edges. One face forms the square base, and there are four triangular faces.
5 faces 8 edges 5 corners (vertexes) * * * * * Wrong! The answer given above is for a SQUARE based pyramid. A triangle based pyramid, or a tetrahedron, has 4 faces, 6 edges and 4 corners (vertices).
Two pairs
A square pyramid has 5 faces , 5 verticies and 8 edges
A triangular based pyramid has 6 edges, 4 faces and 4 vertices