Remember, to find the area of a regular polygon other than a hexagon, square, or equilateral triangle...find the area of one of the triangles within the shape by finding the base and height.  How do we find the base and height?  You will have to rely on your old friend...the trig ratios.  I'll enclose a link for you to review those if you feel a bit fuzzy about them.  Let me know if you have any questions and we will quiz on Monday over this.

Trig Ratios

If you're dealing with a hexagon, square, or equilateral triangle, you might need to use the properties of the special right triangles.  Here is the relationship again, in case you don't have access to it in your notes.

Special right triangle templates