*Contributor: Meghan Vestal. Lesson ID: 11404*

Circles sure look simple. They just go around and around. Did you know circles actually have four parts? If this doesn't strike a "chord" with you, it's time you got a-round to learning about circles!

categories

subject

Math

learning style

Kinesthetic, Visual

personality style

Beaver

Grade Level

Intermediate (3-5)

Lesson Type

Quick Query

Although it looks simple, a circle has four main parts!

- Can you find and name them all?

A circle is a set of points that are an equal distance from a center point.

- Did you know there are four parts to a circle?
- Did you even know that a circle has parts?

The parts of a circle are as follows:

^{Image by Optimager, via Wikimedia Commons, is licensed under the CC BY-SA 3.0 license}

What is each of these parts and why are they important?

**Diameter**A line, or*chord*, that goes from one side of a circle to the other, and passes through the center of the circle.**Radius**A line segment that starts at the center of a circle and goes to its edge; half of the*diameter*.**Circumference**The distance around the*perimeter*, or outside, of the circle.**Chord**A line that goes from one side of a circle to the other.

A fun fact about circles is the *diameter* is always a *chord*, but a *chord* is not always a *diameter*. A chord must run through the center of a circle to be considered the diameter.

Since you have been introduced to the parts of the circle, move on to the *Got It?* section to practice labeling the parts of a circle on your own.

We help prepare learners for a future that cannot yet be defined. They must be ready for change, willing to learn and able to think critically. Elephango is designed to create lifelong learners who are ready for that rapidly changing future.

Copyright© 2020 Elephango | Contact Us
| Terms & Conditions
| Privacy Policy
| Acceptable Use Policy