I am wondering how to find the area of a Regular Pentagon. I need to be able to do this for my GCSE coursework on areas of shapes with fixed perimeters.
When finding areas, we suggest you break your shape into 'easy' shapes:
Suppose the pentagon has each side of length 10 cm.
In this case, you can split the regular pentagon into 5 identical triangles.
The area of the pentagon is five times the area of one triangle: