The interior angle of any polygon (other than a triangle) can have ANY value greater than 0 degrees and less than 360 degrees. 180 degrees may be excluded since that does not really make an angle. There is no other requirement of an individual angle. Consequently, you cannot find an interior angle of a 9-gon.
If it's a regular 9 sided polygon then each interior angle will measure 140 degrees.
No, you cannot find the exterior angle before the interior because the interior angles can vary in many ways.
Subtract it from 180
180 - interior angle = exterior angle
The interior angle and the exterior angle are supplementary. That's why you learned about supplementary angles ... or at least they were presented in class ... before polygons.
If it's a regular 9 sided polygon then each interior angle will measure 140 degrees.
No, you cannot find the exterior angle before the interior because the interior angles can vary in many ways.
Exterior Angle = 360/number of sides. Interior Angle = 180 - Exterior Angle. Combining Interior Angle = 180 - (360/number of sides).
With a protractor
Subtract it from 180
180 - interior angle = exterior angle
The interior angle and the exterior angle are supplementary. That's why you learned about supplementary angles ... or at least they were presented in class ... before polygons.
360 /each exterior angle
Each interior angle: 140 degrees Each exterior angle: 40 degrees
40 degress because a straight line is 180 degrees and an interior angle with its exterioir angle is a line spilt in half so to find the interior/exterior angle, taek 180 and subtract the interior/ exterior angle and then you will get the the other angle, sorry this is kinda conufsing!
Each interior angle measures 162 degrees.
If one interior angle is 165 degrees, find the number of sides of the polygon.