Answer:
Circle A - 1 right angle
Circle B - 1 set of parallel sides
Step-by-step explanation:
If you put 0 in the place of x or y, which every one you choose, it will cancel it or and you can just divide the number next to it by the answer (-20, 20). Take it one step at a time, don't try to do both at the same time.
16.5ft squared
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