You are not logged in.
login | register
Tool: Radius of a circle - Math Open Reference
Tool Thumbnail

Go to: (opens a new window)

An interactive applet and associated web page that demonstrate the radius of a circle. The applet shows a circle with a radius line. The radius endpoints are draggable and the figure changes to ensure the line is always a radius of the circle. Demonstrates the radius is always a constant length for a given circle. See also the entries for circumference and diameter.

Applet can be enlarged to full screen size for use with a classroom projector. After use in the classroom, student can access it again from any web browser at home or in the library with no login required.

This resource is a component of the Math Open Reference Interactive Geometry textbook project at

Technology Type: Java Applet 
Author: John Page
Language: English 
Cost: Does not require payment for use

Average Rating:  [0] Login to rate this resource
My MathTools: Login to Subscribe / Save This
Reviews: be the first to review this resource
Discussions: start a discussion of this resource

Courses: Geometry Radius