ACT Math : How to find the length of the diagonal of a pentagon

Example Questions

Example Question #24 : Plane Geometry

If the side of a pentagon is , what is the diagonal of the pentagon?

Explanation:

Write the formula for finding the diagonal of a pentagon.

Plug in the side length and simplify.

Example Question #1 : How To Find The Length Of The Diagonal Of A Pentagon

If a side of the pentagon is , what is the diagonal of the pentagon?

Explanation:

Write the diagonal formula for a pentagon.

Substiitute the side length and find the diagonal.

Example Question #26 : Plane Geometry

Find the length of the diagonal for a pentagon with a a side length of .

Explanation:

Use the formula for the diagonal of a pentagon:

Example Question #4 : Pentagons

Find the length of the diagonal for a pentagon with a perimeter of .

Explanation:

1. Use the formula for perimeter to solve for the side length:

2. Use the formula for the diagonal of a pentagon:

Example Question #2 : How To Find The Length Of The Diagonal Of A Pentagon

Find the diagonal for a pentagon with a perimeter of .