We've been learning a lot about areas of different shapes and we just finished the week off with a test covering all of them. My favorite problems were were the ones that involved regular polygons because you had to use your knowledge of all other subjects. For theformula, A=(1/2)ap, and p=ns. The a is the apothem which you needed to figure out sometimes by using knowledge of special right triangles and the pythagorean theorem. It was a difficult chapter but it was especially interesting to figure out where all the formulas for the areas of these shapes comes from.