In this lesson on angles, Julie Harland defines vertical angles and demonstrates how to solve problems that involve finding the measures of angles. She works through three problems, showing how to use the properties of intersecting lines and adjacent angles to determine the angles' measures. By the end of the lesson, viewers will have a solid understanding of how to find angle measures and how to apply the concepts of vertical angles and supplementary angles to solve more complex problems. Visit Julie's website, yourmathgal.com, for more math videos organized by topic.
Problems with angles are done on this video. Vertical angles defined.
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com