Question

Question is in ze comments.

Answer 1

What have you tried?

Answer 2

Nothing, yet.

Answer 3

Well like, try somethin out, start choppin it up into triangles. You know that the sum of the angles in a triangle equals 180 degrees right?

Answer 4

Yes, I do.
I'll give it a shot.

Answer 5

Ok good luck! Here's a hint, make a point somewhere inside the pentagon and draw corners connecting to it to make triangles