A shape consisting of those points in a plane which are equidistant from a given point called the center.
The ratio of the circumference to the diameter of a circle.
A line from the center of the circle of the circle to any point on the circle.
more than 1 radius.
A line segment that links 2 points on a circle.
A chord that crosses through the center of the circle.
A line or ray that interests a circle at only 1 point.
Point of Tangency
The point where a circle and a tangent intersect.
Part of a circle with an angle measure.
Arc whose measure is smaller than 180 degrees.
Arc whose measures is larger than 180 degrees.
Arc whose measure is equal to 180 degrees.
An angle whose vertex is a center of a circle.
Circles with congruent radii.
Please allow access to your computer’s microphone to use Voice Recording.
We can’t access your microphone!
Click the icon above to update your browser permissions above and try again
Reload the page to try again!
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Your microphone is muted
For help fixing this issue, see this FAQ.