Why was the obtuse angle upset? Because it was never right! A valuable resource is loaded with background information on types of angles and lines. Learners review the characteristics of parallel, perpendicular, and...

What do you create when you rotate a ray? An angle! Teach all the angle basics including naming, measuring, supplements, and complements. 

Geometry is full of shapes, figures, and corresponding things here and there. The guide shares all of the key pieces of geometric information in a nicely color-coded and labeled sheet. 

Address key vocabulary in the seventh grade Common Core Math Standards with this comprehensive list. A series of word cards is also provided that supports each term with images and examples, making this an excellent tool for teaching the...

Brush up on your math skills relating to adjacent angles then try some practice problems to test your understanding.

Explore adjacent angles with this helpful reference tool. Provides a detailed definition, examples, and an interactive activity that enhances further explanation. Includes links to related topics.

LearnAlberta.ca's Mathematics Glossary defines adjacent angles and gives several examples to illustrate the concept. [Requires Java.]

Everything you wanted to know about angles and more, including 1) how to measure angles 2) types of angles 3) angle relationships and 4) angles around a transversal.

Brush up on your math skills relating to adjacent angles then try some practice problems to test your understanding.

Intermath Dictionary's site defines terms relating to angles, gives examples, and offers interactive exercises.

This site gives a decription of interior angles along with a visual representation. Be sure to use the links to related terms, everyday examples, challenging problems, more information, and the interactive check point involving interior...

A complete reference guide to vertical angles. It provides definitions, examples, and an interactive activity that enhances further explanation. Includes links to related topics.

Explains how to model angles in the x,y-plane, and demonstrates how to extend the concept of trig ratios to angles larger than 90 degrees.

Learn about linear pairs of angles with this helpful reference tool. Provides a detailed definition and an interactive activity that enhances further explanation. Includes links to related topics.

A list of geometry definitions and a matching activity.

This site gives a description of edge along with a visual representation. Be sure to use the links to related terms, everyday examples, challenging problems, more information, and the interactive check point located in the left-hand column.