the pentagon is made up of 5 congruent triangles that look like this |dw:1361849987636:dw|
find the area of one of the triangles then multiply that result by 5 to get the area of the pentagon
Do I use 1/2bh?
If I do, would it be 1/2(13)(17.9)?
yes, but it would be (1/2)*(13)*(8.95)
Thank you for the help!