Protractors are a great way to measure angles, and you might use them a lot at some point! Watch as professor and mathematician Edward Burger shows how to use a protractor to measure and construct angles and angle bisectors. This video is from Thinkwell's award-winning Geometry course. See www.thinkwellhomeschool.com for more videos like this one along with exercises, worksheets, quizzes, notes, and more!