Final answer:
To result in the Pythagorean Theorem, we need to add the left sides and the right sides of each equation and then use the fact that q + r = c.
Step-by-step explanation:
To result in the Pythagorean Theorem, we need to add the left sides and the right sides of each equation and then use the fact that q + r = c. So the correct step is option a) Add the left sides and the right sides of each equation, and then use the fact that q + r = c.