Answer: 8.9%
Step-by-step explanation: 13 - 4.1
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°.
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It is easy the left side as to be ten times greater then your
right side for example my ones place is ten times greater my tens place
is ten times greater than my hundreds place and my hundreds place is ten
times greater than my thousands place i hope this will help you bye
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