On a coordinate plane, a trapezoid is inside of a rectangle to form 3 triangles within the rectangle. The trapezoid has points (4, 4), (4, 14), (12, 20), and (20, 16). The rectangle has points (4, 4), (4, 20), (20, 20), and (20, 4). Triangle 1 has points (4, 14), (4, 20), (12, 20). Triangle 2 has points (12, 20), (20, 20), (20, 16). Triangle 3 has points (4, 4), (20, 16), (20, 4).
Complete the steps to find the area of the trapezoid.

Area of rectangle = square units

Area of triangle 1 = square units

Area of triangle 2 = square units

Area of triangle 3 = square units

Area of trapezoid = square units