PLEASE HELP WITH THIS

Step-by-step explanation:

l^2=A

also l^2=x^2

x²=4x+12

x²-4x-12=0

x²-6x+2x-12=0

x(x-6)+2(x-6)=0

(x-6)(x+2)=0

x=6

x=-2 (rejected)

side length=6 inches

question is incomplete.

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer