Question

A circle is divided into 9 equal parts. What is the angle measure of two of those parts?

Answer 1

There are 360 degrees in a circle. That means that we first divide 360 by 9.
360/9=40
We have the measure for one of the nine parts of the circle, but we need two. All we do is multiply 40 by 2 to get 80 degrees.

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Answer 2

The angle measure of two parts of a circle divided into 9 equal parts is 120 degrees.

what is the sum of angle in a point?

The sum of all the angles around a point is always 360°.

Circle always have a central point. when we divide the circle into 9 part from the point, the angles of each measure can be calculated as follows:

sum of angles = 360 degrees.

measure of each angle = 360 / 9

measure of each angle = 120 / 3

measure of each angle = 60 degrees

Therefore, the angle measure of two of those parts is 60 + 60  = 120 degrees.

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