Posted by KiKi on .
A polyhedron has 15 vertices and 31 edges. How many faces does it have?

math 
bobpursley,
facesvertexes+edges=2
This is Euler's formula.
Posted by KiKi on .
A polyhedron has 15 vertices and 31 edges. How many faces does it have?
facesvertexes+edges=2
This is Euler's formula.