What would this be ? I’m overthinking it

See answers below

Step-by-step explanation:

Notice that the big trapezoid C consists of Two full squares and half od a square (that makes the right angle triangle left after folding the square)

so:

trapezoid C = 2.5 the size of the square

That makes the smaller trapezoid D = 1.5 the size of the square

and the triangle left = 0.5 the size of the square.

5.-

a) the square is 1/2.5 = 2/5 of C

b) the square is  1/1.5 = 2/3 of D

c) the square is 1/0.5 = 2 times the size of the triangle

d) the square is 1/1 = 1 of itself

6.-

a) Trapezoid C is 5 times triangle A

b) Trapezoid C is 2.5 = 5/2 of the square.

7.-

a) Trapezoid D is 3 times triangle A

b) Trapezoid D is 3/5 of trapezoid C