Building Blocks - Circles - First Glance

math.com
Home | Teacher | Parents | Glossary | About Us
Homework Help Practice Ask An Expert Calculators & Tools Games Store
© 2000-2005 Math.com. All rights reserved. Please read our Privacy Policy. A circle is a closed curve in a plane. All of its points are an equal distance from its center. That distance is called the radius of the circle. A diameter is a line segment that has both of its endpoints on the circle and passes through the center.

A chord is a line segment with both endpoints on the circle. A portion of a circle is called an arc. A semicircle is an arc that is one-half of a circle.

The distance around a circle is called its circumference.

Click each term to learn more.

Homework Help | Geometry | Geometry Building Blocks Email this page to a friend Email this page to a friend
Search
· Words
· Coordinate geometry
· Pairs of lines
· Classifying angles
· Angles and intersecting lines
· Circles
First Glance In Depth Examples Workout
First Glance In Depth Examples Workout
Circles

Tag » A Line Segment Whose Endpoints Are On The Circle Is Called