# ISEE Lower Level Quantitative : How to find perimeter

## Example Questions

### Example Question #1 : Plane Geometry

Find the perimeter of the following trapezoid.      Explanation:

In order to find the perimeter of the trapezoid, we have to add up all the outer sides: ### Example Question #2 : Plane Geometry

Find the perimeter of the following trapezoid.      Explanation:

In order to find the perimeter we must add up all the outer sides of the trapezoid. ### Example Question #3 : Plane Geometry

Daria found the perimeter of the below trapezoid to be 29 inches. What is the length of the missing side?      Explanation:

To find the perimeter of a trapezoid, add up the lengths of its four sides. In the given trapezoid, To find the missing side, combine like terms and solve for :   The missing side of the trapezoid is long.

### Example Question #4 : Plane Geometry What is the perimeter of the above trapezoid?      Explanation:

To find the perimeter of a trapezoid, add up the lengths of the four sides. In the given trapezoid, ### Example Question #11 : Trapezoids

Angela found the perimeter of the trapezoid below to be 35 cm. What is the length of the missing side?      Explanation:

To find the perimeter of a trapezoid, add up the lengths of the four sides. In the given trapezoid, To find the missing side, combine like terms and solve for    The length of the missing side is thus .

### Example Question #12 : Trapezoids What is the perimeter of the above trapezoid?        