Circles Topics

The Basics of Circles

Mathematicians like to define things before they start talking about them. This is a good idea in...

Arcs

Central angles give rise to another concept that we call the arc. Not ark, as in Raiders of the...

Chords

Fun activity time! You'll need a hula-hoop and several huge rubber bands big enough to stretch...

Inscribed Angles

Let's say you're sharing a pizza with three friends. You order from Inconvenient Pizzas, Inc....

Tangents and Secants

Lines and circles tend to avoid each other, because they kind of freak each other out. Lines...

Circles on the Coordinate Plane

Let's take a look at (surprise, surprise) a circle.We don't know anything about this circle....