Find The Measure Of The Indicated Exterior Angle Of The Triangle. If two of the angles of a triangle are 30 and 70 degrees the third angle measures. S T 5 D C T 140 45.
The line on the bottom is a straight angle answer choices. Another way to calculate the exterior angle of a triangle is to subtract the angle of the vertex of interest from 180. Then find the bottom left angle in the triangle on the right.
The Exterior Angle Theorem Date_____ Period____ Find the measure of each angle indicated.
Find the 3rd measure of the triangle on the left first. SSS is Side Side Side. 170 - n 6n - 20 4n 47 170 - n 10n 27. The exterior angles taken one at each vertex always sum up to 360.