For each diagram below, write and solve an equation to find x. Homework Help ✎
The sum of the interior angles = 180°(n − 2)
Subtract the value of the known angles (125°, 125°, and 90°) from the sum of the interior angles you found in step 1. Afterwards, divide by 2 to solve for x.
Note that 6x + 18° and the angle across from it are vertical angles, while that same angle and 2x + 30° are corresponding angles.
What does that mean about 6x + 18° and 2x + 30°?
x = 3