Elementary School Resource

Definition of an Angle

This web page presents an angle that the user can adjust by dragging the end points of the line segments forming the angle. As the image changes, it shows the angle measure and a message that indicates which type of angle it is. The message and angle measures can be turned off to facilitate classroom discussion. This page also discusses basic, but necessary vocabulary used in describing angles.

Related NY State Academic Standards: 4.MD.5, MST3.4.G.8

Be sure to check out our Educational Resources, featuring thousands of activities, lesson plans, constructed-response questions, rubrics, teacher resources, multimedia, and more!