Don't be obtuse, this geometry unit is the just the right resource for educating the acute young minds in your class. From classifying and measuring angles, to determining the congruence of shapes, this...

Learn how to solve problems that involve finding unknown supplementary, complementary, vertical, and adjacent angles in this Math Shorts video from the Utah Education Network and Planet Nutshell, Inc.

Practice telling whether two angles are supplementary, complementary, or vertical. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice using knowledge of vertical, complementary, and supplementary angles to find a missing angle. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice setting up algebraic equations to solve unknown angle problems. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

[Free Registration/Login Required] Students explore the concept of vertical angles by navigating through the interactive learning module and then answering questions that go along with the module.