Answer:
It's a rotation of 90 degrees - doesn't matter which way - around the intersection of the two lines
Step-by-step explanation:
<u>Claim</u>: it's a 90 degree rotation around the intersection of f and g.
It's easy to spot the two lines are perpendicular. Let's assume the rotation doesn't happen at the point of intersection , but slightly to the side, around let's say, ; the new line will coincide with if and only if , ie only the rotation happens around the intersection.
Answer:
Try the fourth one. Forgive me if I'm wrong.
The maximum possible area is 36 square units.