Answer:
x = 120
Step-by-step explanation:
All three angles are marked as equal. There are two ways to find x.
Method one
Find the supplement to x
Let the supplement to x be y
y + y + y = 180
3y = 180 Divide by 3
y = 180/3
y = 60
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A straight line has an angle of 180 degrees.
x + y = 180 Substitute y = 60 into the equation
x + 60 = 180 Subtract 60
x = 180 - 60
x = 120
Method 2
The two angles not connect to x are called remote interior angles. These two angles are equal to x.
x = 60 + 60
x = 120
