3-5: Vertical Angles

Key Concept

Vertical angles are formed by two intersecting lines and are opposite each other. Vertical angles have equal measures.

Two lines intersect, forming four angles, labeled clockwise 1, 2, 3, and 4. Angle 2 and angle 4 are vertical angles. Angle 1 and angle 3 are vertical angles.

Part 1

Example Finding Vertical Angle Pairs

Name the angle pairs that are vertical angles.

Four angles pairs.

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Table of Contents

Digits, Grade 7, Volume 1, Homework Helper Unit A: Number and Operations Unit B: Expressions, Equations, and Relationships Unit C: Measurement and Geometry Unit D: Proportionality English/Spanish Glossary Formulas Math Symbols Formulas Measures Properties