Angle measures refer to the amount of rotation between two rays that share a common endpoint called the vertex. They are usually measured in degrees or radians.
Degree: A unit for measuring angles where one complete revolution is divided into 360 equal parts.
Radian: A unit for measuring angles based on the radius of a circle, where one complete revolution is equal to 2π radians.
Vertex: The common endpoint shared by two rays forming an angle.
Study guides for the entire semester
200k practice questions
Glossary of 50k key terms - memorize important vocab
© 2024 Fiveable Inc. All rights reserved.
AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.