In this lesson, Julie Harland defines and explains various angle terms and symbols, such as parallel lines, perpendicular lines, corresponding angles, vertical angles, and transversals. She then uses these concepts to solve two angle problems involving parallel lines and transversals. The lesson emphasizes that all angles on the same side of a transversal crossing two parallel lines have the same measure, and that the smaller angle plus the larger angle always add up to 180 degrees. Visit her website, yourmathgal.com, to watch more math videos.
Problems with angles are done on this video. Transversal, corresponding, alternate and interior angles defined.
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com