A **coordinate plane** can be used to find the **lengths of line segments**,

which can then be used to find **perimeter** and **area** of figures in the plane.

Start by finding the lengths of the sides of the rectangle.

Each square has a length of one unit.

Count the number of squares along each side of the rectangle to find its length.

Add the side lengths to find the perimeter.

9 units + 4 units + 9 units + 4 units = 26 units

So, the perimeter of the rectangle is 26 units.

Multiply the length and width to find the area.

9 units × 4 units = 36 square units

So, the area of the rectangle is 36 square units.