Stuck on these couple of questions could i get help??

1=51 3=51

Step-by-step explanation:

So we know since the line are parlle that the angles for each would be idetical

so 6,8,2, and 4 would all have same angle of 129

to find the other angles we would subtract 180 (the degree of a stright line) from 129 getting 51

so now we know that angles 1,3,5 and 7 are 51 degrees

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6

b

step-by-step explanation:

i dont know