The triangle is a 45o - 45o - 90o triangle.
Length of PR = 7 inches.
In a 45o - 45o - 90o triangle, length of hypotenuse is times the length of leg.
In ΔPQR, and are congruent legs and is the hypotenuse.
PR = PQ
[Divide each side by .]
[Replace PR with 7.]
PQ = 7 inches
Since the lengths of two legs are equal in 45o - 45o - 90o triangle, PQ = QR = 7 inches.
The lengths of and are 7 inches.
Correct Answer is : 7 inches and 7 inches