A slideshow that provides practice problems, formulas, and animations that teach students about angles and how to calculate their measures in both radians and degrees. Content is based on the Eighth Edition of "Precalculus Graphical, Numerical, Algebraic" by Demana, Waits, Foley, and Kennedy.Answers to the practice problems are found in the speaker notes, with work shown as well!This also pairs with the handout that I also have available, with the same content and sample problems.