Answer:
9 square units
Step-by-step explanation:
first, draw a rectangle that surrounds the shape, calculate the area of the rectangle then take away the parts that aren't part of the triangle
you start with 20 square units, -4 for the bottom right side, -5 for the top right side, and -2 for the bottom left side
20-4-5-2=16-5-2=11-2=9 square inuts
