Exterior Angle Theorem Worksheet. 2 m abc 55 so m acr 60 55 115 ref. You can choose a single variable or an algebraic expression for the unknown angle.
S t 105 5 d c t 140 45. The exterior angle theorem date period find the measure of each angle indicated. Find the measure of the indicated angle.
An exterior angle of a triangle is equal in measure to the sum of the other two interior angles.
This product is included for free in the trian. 50 u t 70 2 t p 115 50. 2 m abc 55 so m acr 60 55 115 ref. Applying the exterior angle theorem add the two opposite interior angles to find the unknown exterior angle of a triangle.
