### Instruction: A pyramid has 6 vertices and 6 faces. How many edges does it have?### Response: To solve this problem, I will use a formula that relates the number of vertices, edges, and faces of a polyhedron, which is a solid with flat faces.
The formula is called Euler's formula, and it says that V - E + F = 2, where V is the number of vertices, E is the number of edges, and F is the number of faces.
I can plug in the given values of V and F into the formula, and then solve for E. So I have 6 - E + 6 = 2.
Simplifying, I get -E + 12 = 2, or -E = -10.
Dividing both sides by -1, I get E = 10.
Therefore, the pyramid has 10 edges.