A three-dimensional solid shape has 4 faces and 7 vertices. The number of edges it will have is ___.
Euler's formula is
F + V - E = 2
4 + 7 - E = 2
11 - E = 2
E = 9
So, the number of edges is 9
A three dimensional shape can have edges only if it has vertices.
If a polyhedron has 7 faces and 10 vertices, then it will have ___ number of edges.
A solid has 40 faces 60 edges how many vertices does it have.