Question

how many edges does a polyhedron have which has four vertices and four faces​

Answer 1

Answer:

Three edges AB, BC, and CA, each between two vertices of a triangle. A polygon is bounded by edges; this square has 4 edges. Every edge is shared by two faces in a polyhedron, like this cube.

Answer 2

6 edges

If the solid is a polyhedron, name it and find the number of faces, edges and vertices its has. The base is a triangle and all the sides are triangles, so this is a triangular pyramid, which is also known as a tetrahedron. There are 4 faces, 6 edges and 4 vertices.