Answer:
Step-by-step explanation:
It's an isosceles triangle so it means two sides are equal or better term congruent .
So PR is equal to PQ
You can write
X+1=2x+1
Solve the equation
2x+1-x-1=0
X=0
In order to find PQ plug X in place of 2x+1
To find
QR do the same for its expression .
