What are supplementary angles? Learn the definition and properties of supplementary angles, and see the theorems related to supplementary angles with examples.

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

Learn to define complementary, supplementary, vertical, and adjacent angles. Discover how to find these angles and what two of each angle add up to, and see examples.

Explore supplementary angles in this 5-minute video lesson. Learn about their properties and theorems, followed by a quiz to test your geometry knowledge.

Learn the difference between complementary and supplementary angles with our bite-sized video lesson! See examples and test your knowledge with a quiz.

The angles are across the intersection from each other and have the same angle measurement. Are vertical angles supplementary or complementary? Vertical angles can be supplementary …

What are same side interior angles and the same side interior angles theorem? Learn these definitions, the SSIA theorem, and how to use the theorem in math.

This lesson covers five types of angles pairs: complementary angle pairs, supplementary angle pairs, vertical angle pairs, linear or straight angle pairs, and adjacent angle pairs.

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.

What are the types of angles and angle relationships? Learn about corresponding interior angles, alternate corresponding angles, and angle relationships names.