1. find the value of x and y

2. find the value of x and y

explain

Step-by-step explanation:

Look at the pictures.

1.

We have the triangle 30° - 60° - 90°. The sides are in proportion 1 : √3 : 2.

Therefore:

2.

We have the triangle 30° - 60° - 90°. The sides are in proportion 1 : √3 : 2 and the triangle 45° - 45° - 90°. The sides are in proportion 1 : 1 : √2.

Therefore:

The common side of the green and pink triangle also has a length of x = 15.

Let the other side of the green triangle be marked with z.

Then:

         multiply both sides by √3

       divide both sides by 3

i really dont know

step-by-step explanation:

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