Answer:
x = 12
Step-by-step explanation:
Hi there!
The straight line on the bottom of the diagram tells us that 20° + (6x-2)° + 90° is equal to 180 degrees:
180 = 90 + 20 + (6x-2)
90 = 20 + (6x-2)
70 = 6x-2
72 = 6x
12 = x
Therefore, x is equal to 12.
I hope this helps!
