If the ratio is 1:4 then exterior angle is 1/5 of a straight line, ie 36 deg and interior 180 - 36 ie 144 deg. The sum of exterior angles of any plane figure is 360 deg so there are 360/36 = 10 sides to the polygon. Check: Sum of interior angles of n-sided polygon is (2n - 4) right angles, ie in this case 16 x 90 = 1440 deg, making each interior angle 144 deg. QED
In a polygon there are no such angles.
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The measure of an interior angle in degrees of a regular polygon of n sides is given by the formula: 180 x (n-2) / nSubstituting with n=18, then the answer is that the interior angle = 160The measure of an exterior angle in degrees of a regular polygon of n sides is given by the formula: 360/nSubstituting with n= 18, then the answer is that the exterior angle = 20
The measure of an interior angle in degrees of a regular polygon of n sides is given by the formula: 180 x (n-2) / nSubstituting with n=9, then the answer is that the interior angle = 140The measure of an exterior angle in degrees of a regular polygon of n sides is given by the formula: 360/nSubstituting with n= 9, then the answer is that the exterior angle = 40
180 minus interior angle = exterior angle because there are 180 degrees on a straight line
Very rarely.
The interior angle of a polygon and its adjacent exterior angle can never be complementary.
Ah...
An interior or exterior angle of the polygon.
No, they are supplementary, not complementary.
In a polygon there are no such angles.
No. The interior angle and exterior angle at the same vertex are supplementary. Each of them is (180 degrees minus the other). In rectangles (including squares), the interior and exterior angles at each vertex are both right angles.
The sum of an adjacent interior and its exterior angle will total to 360°. If the angles were to be equal, they would both have to be 180°. An angle of 180° is a straight line. A polygon may be composed of straight lines that intersect at vertices but a straight line has no vertex. That being the case, the answer to your question is "No".
equal to 180°
With a protractor or if you know the exterior angle then it's 180 - exterior angle = interior angle
Measure them with a protractor
It is: 180-exterior angle = interior angle because there are 180 degrees on a straight line