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.