If you mean a regular 9 sided nonagon Total interior angles are (9-2)*180 = 1260 degrees Each interior angle is 1260/9 = 140 degrees
Hexagon has 6 sides so 360/6 = 60 degrees interior angle therefore exterior angle = 360 - 60 = 300 degrees
156 degrees Sum of interior angles of a polygon=180(n-2), where n is the number of sides. To find one interior angle's measure, divide by the total number of angles, which is also the total number of sides.
If you absolutely needed to measure an angle to find out its degree measure, you would use a protractor.
the formula for the total of all the angle measures is (n-2)(180) n meaning the number of sides so then you do this- (5-2)180=130+94+109+112+x 3(180)=445+x 540=445+x 95=x
It is: 360/5 = 72 degrees for each exterior angle and each interior angle will be 108 degrees
Use a protractor
Subtract the interior angle from 180
Each interior angle measures 162 degrees.
They are all 60 degrees.
360/number of sides and deduct the quotient from 180 which will give the measure of each interior angle
There are 540 interior degrees in a pentagon So: 540-112-102-118-107 = an angle of 101 degrees
AnswerIt is Dodecagon.To find this, you have to first find the exterior angle of the polygon. Since the exterior angle of a polygon is always supplementary to the interior angle, you subtract the measure of the interior angle from 180. 180-150=30. Now You divide 360 by the measure of the exterior angle to get the number of sides of the polygon. 360/30=12. A 12-sided polygon is called a dodecagon