### Instruction: A pyramid has 6 vertices and 6 faces. How many edges does it have?### Response: To solve this problem, I need to use the formula that relates the number of vertices, edges, and faces of a polyhedron: V - E + F = 2.
In this case, V = 6 and F = 6, so I can plug them into the formula and get: 6 - E + 6 = 2.
Simplifying, I get: -E + 12 = 2.
Subtracting 12 from both sides, I get: -E = -10.
Dividing both sides by -1, I get: E = 10.
So the pyramid has 10 edges.