Question

Look at the net of the given polyhedron.
The sum of the number of edges and vertices of the polyhedron is ________.

Answer 1

where's the net?

Answer 2

An edge is one of the straight lines, and the vertices are where the lines meet. You just have to count them.

Answer 3

By Euler's formula (F + V - E = 2):
There are 8 faces, so F = 8
There are 8 triangles, and each has three edges. So E=24
8+V-24=2
Solve for V:
V=18. So E+V=24+18=42

Answer 4

ok thank-you guys!!