If a polyhedron has 10 vertices and 7 faces, find the number of edges in it.
Vertices = 10 Faces = 7 Using Eulers formula, F+V−=27+10−E=2−E=−15⇒E=15
If a polyhedron has 9 faces and 9 vertices. Find the number of edges in polyhedron and also draw the corresponding polyhedron. [3 MARKS]
If a polyhedron has 7 faces and 10 vertices, then it will have ___ number of edges.