Sum of opp. interior angles = ext. angle
sum of all interior angle in a trangle = 180 deg
Answer: KJ becuase it is the first two like on but put backwards.
Answer:
13
Step-by-step explanation:

Hope this helps..
Answer:
x =4
Step-by-step explanation:
x/y = 1/2
(x + 2) / (y + 1) = 2/3
Cross multiply the first equation
2x = y
Put that value for y into the second equation.
(x + 2) / (2x + 1) = 2/3 Cross multiply
3(x + 2) = 2(2x + 1) Remove the brackets.
3x + 6 = 4x + 2 Subtract 3x from both sides
6 = 4x - 3x + 2
6 = x + 2 Subtract 2 from both sides
6-2 = x
x = 4
The answer is 24/35. i would tell you to simplify but it is already in its simpliest form.