In a circle, the internal vertical angles have a formula of

In this case, the formula would be:

We know that whole circle is 12x. And 12x is equal to 360°. When we put that into equation:


If x is 30°:

So, angle 7 is 90°.
Neither of the equations are parallel or perpendicular
Answer:x=20 y=70
Step-by-step explanation:
The answer is 671
3,039/9
671
671*9
3,039