Basic Principles of Geometry

What happens when you come across a geometry problem with multiple sets? This lesson shows you how to find more unions and intersections for multiple sets.

In this final lesson of the introductory geometry course from Math Fortress, practice identifying unions and intersections of lines and angles.

In this basic geometry lesson, learn about the concepts associated with segment measurement, including measuring segments and congruent segments.

In this basic geometry lesson, practice what you've learned about measuring segments and congruence by running through eight example problems.

In this basic geometry lesson, learn about the concepts associated with congruent segments, including identifying congruent segments within diagrams.