Circle Definitions

What is a Circle?

Circles are a fundamental part of math! In this tutorial, you'll be introduced to circles and see the different parts of a circle such as the diameter, radius, and chord. Check out this tutorial to learn about circles!
What is Pi?

Some numbers are just so cool that they get their own tutorial. Take the irrational number pi. This number is simply a ratio, but people have been working for years to find more and more digits of pi. Check out this tutorial to learn about pi!
What is a Sector and Central Angle?

Just about everything in math has a name! Did you know that a fraction of the area of a circle is known as a sector? This tutorial introduces you to the term sector and gives you examples of sectors. Take a look!