Learn to define what congruent angles are. Discover the congruent symbol and how to express congruent angles, and see how to draw congruent angles with examples.

Learn how to identify congruent angles, and see examples that walk through sample problems step-by-step for you to improve your math knowledge and skills.

Learn how to construct congruent angles, and see examples that walk through sample problems step-by-step for you to improve your math knowledge and skills.

Learn about angles in parallel lines. Understand how to prove lines are parallel. Read about proving lines are parallel using parallel line rules and practice examples.

Learn about congruent triangles in this informative video lesson. Explore their parts and discover real-world examples to reinforce your knowledge, followed by a quiz.

Some of the angles formed by parallel lines and transversals are congruent, namely: corresponding, interior alternate, exterior alternate, and vertical angles. Let's see why this happens.

Congruent angles are angles that have the exact same measurements or that have the same number of degrees. For example, two 60-degree angles are congruent.

This lesson is all about congruent angles. You will learn what 'congruent' means, what a congruent angle is and how to tell if one angle is congruent to another angle.

Learn about properties of congruence. Learn how to prove lines and angles congruent, and study transitive, symmetric, and reflexive properties of congruence.

Vertical Angles Vertical angles are a pair of angles formed by two intersecting lines. The pair of angles are across the intersection from each other and have congruent angle measurements.