how do you find interior and exterior angles

Question

it is geometry chapter five

Answer 1

Interior angles are found inside of figures such as triable and rectangles (or any other polygon). Those can add up to different amounts depending on how many sides the figure has.

The equation to find the total degrees inside the figure is the following:

180(n-2) where n is the number of sides in the figure (just as Robert mentioned).

As for exterior angles, they are located outside of the figure and are supplementary to the interior angles, meaning they add together to make 180°. A note about these is that unlike the interior angles, the exterior will always add up to 360°.

Answer 2

Method I. For any polygon, the sum of exterior angle measures is 360 degrees, and each pair of interior and exterior angles are supplement.

 

Method II. For any polygon, the sum of interior angle measures is (n-2)(180) degrees, and each pair of interior and exterior angles are supplement.