The diagram shows a regular pentagon with side length 5. Expiuleue
 area of this pentagon by following these steps.
 ✓ 1. Press Continue to partition the pentagon into five congruent
 triangles.
 ✓ 2. Press Continue to draw an apothem with length a.
 3. Based on the variables on the diagram, how can the area of the
 shaded triangle be determined?
 Area =