2 Points
Gary is building a new L-shaped desk for his room. He wants to make sure it is large enough to hold all his supplies. The dimensions of the desk, in feet, are shown in the diagram. What is the area of the desk?

a reflection across the x axis and a 90 degree rotation left and right.

to find the perimeter, you add up all the lengths of the sides. in this case you would have to add up 18+22+40+80 which equals 160.

the first sequence is an arithmetic sequence.