01:57
Angles, Arcs and Sectors: Parallel Lines Intersected by a Transversal
This clip explains that several angles are created when a transversal intersects two parallel lines. The clip then defines alternate interior angles and corresponding angles.
02:49
Angles, Arcs and Sectors: Calculating Many Angles When Only One is Known
This clip explains how to use what we know about special angle relationships to find the measure of several angles when we known the measure of just one. The explanation covers vertical angles, alternate interior angles, corresponding angles, supple...