At the end of this activity, students should be able to: - recognize adjacent, supplementary, vertical, alternate, corresponding, straight and full angles; - calculate the measures of the above angles, given one or two of them; - use the theorem on the angle sum of a triangle; - define an exterior angle in a triangle and compute it; - calculate angles in a triangle, given two of its angles, one of its angles etc.

Originally released by Learnetic, 2016.