| Pentagon Construction |
| Begin by drawing an arbitrary pentagon. |
| Construct the midpoints of each side. |
| Connect the midpoints to form another polygon |
| Use the construct interior option under the construction menu to construct the interior of both the original pentagon and the pentagon formed by the midpoints. |
| Under the measure menu use the perimeter and area options to calculate the area and perimeter of both pentagons |
| Calculate the ratio of the area and perimeter of the smaller pentagon to the larger pentagon using the calculate option under the measure menu. |