Line Kl is 12. X is 5 and 2x5=10; then we add 2 to 10 and get 12. If you want me to go more into detail I can!
It's 6 x 6 because the ratio is 9:30
5+n=14
(n is the unknown number)
- 2x and 70 are equal, because they are vertical angles.
- 110 and 3x + 5 are equal, becasue they are vertical angles.
- so, the answer would be A.
-- this is because vertical angles are not supplementary so would not be equal to 180°