A polyhedron is a space figure — a three-dimensional figure — whose surfaces are polygons. Each polygon is a face of the polyhedron. An edge is a segment that is formed by the intersection of two faces and a vertex is a point where three or more edges intersect.
Our polyhedron has 6 faces. These are the triangles ABF, BCF, CDF, DEF, EAF, and the pentagon ABCDE. Next, recall that an edge is a segment that is formed by the intersection of two faces.
We can see that our polyhedron has 10 edges. These are A B, B C, C D, D E, E A, F A, FE, DF, CF, and BF. Finally, recall that a vertex is a point where three or more edges intersect.
Our polyhedron has 6 vertices. These include A, B, C, D, E, and F. Let's summarize our results!
Faces (6)
Edges (10)
Vertices (6)
Triangles: ABF, BCF, CDF, DEF, EAF, and the Pentagon: ABCDE
