A cube. The top face has points G, B, C, F and the bottom face has points H, A, D, E. Which line segment is not a diagonal through the interior of the cube shown?
Side B E
Side C H
Side C E
Side D G

its side CE

Step-by-step explanation:

I got it wrong and it showed me the answer. Hope this helps!

C

Step-by-step explanation:

got it right

Number of sides = 360 / (180 -one interior angle)
Number of sides = 360 / (180 -105)
Number of sides = 360 / 75
Number of Sides = 4.8

Perhaps you made a typo in your question?

A polygon with an interior angle of 108 degrees has five sides.
It's a pentagon.