Pls will give brainliest and 5star pls mee

I believe the answer to the first question is:

R is the midpoint of PQ.   (I think)

The answer to the second question is:

Rectangle.   Because rectangles are the only shape in that list that has parallel sides and congruent angles.

And the answer to the third question is:

16, 16, 18.   Because an isosceles triangle is a triangle that has two sides of the same length.

I hope this helps!  :)

8y^50

step-by-step explanation:

-6 is the correct option from the above given options