How To Find Exterior And Interior Angles

Since the interior and exterior angle together add up to a straight line their values should equal 180 degrees.

How to find exterior and interior angles. I triangle has three angles and their measurement when added together will equal 180. How do we find the value of exterior angles. For example if one angle is 80 and another is 30 then start off saying the equation equals 180.

We need to find the interior angle and then subtract that value from 360 to get the value of the exterior angle. For each vertex of a polygon. Write in 80 30 x in front of the equals sign then subtract the combined like terms from the 180.

Exterior angles are created by extending one side of the regular polygon past the shape and then measuring in degrees from that extended line back to the next side of the polygon. To find the measurement of an exterior angle simply take the corresponding interior angle and subtract it from 180. X 50 92 sum of opposite interior angles exterior angle x 92 50 42 y 92 180 interior angle adjacent exterior angle 180.

In a regular or equilateral triangle all the sides and all the angles are equal. Interior angle exterior angle. The exterior angle theorem states that.

Find the values of x and y in the following triangle. An exterior angle of a triangle is equal to the sum of the two opposite interior angles. The interior and exterior angles together lie on a straight line.

Scroll down the page for more examples and solutions on how to find interior and exterior angles of quadrilaterals. In this tutorial we learn how to find the interior and exterior angles of a triangle. An exterior angle of a polygon is an angle outside the polygon formed by one of its sides and the extension of an adjacent side.