180 minus interior angle = exterior angle because there are 180 degrees on a straight line
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to find the the exterior angle, divide 360 degrees by the number of sides. so the answer is 15 degrees.
180-interior angle = exterior angle If it's a regular polygon then: 360/number of sides = exterior angle
To find the exterior angle of any polygon, you can use the formula: 360 degrees divided by the number of sides. For an 8-sided polygon (octagon), the exterior angle would be 360 degrees divided by 8, which equals 45 degrees. This means each exterior angle of an octagon measures 45 degrees.
Since interior angle+exterior angle=180 degrees We can find out the exterior angle by doing 180-140=40 degrees. To find out the number of sides we simply do 360/40=9 So the polygon has 9 sides.