Circle

Search in Circle articles.

The Circle’s Anatomy: A Closer Look at the Parts of a Circle

The Circle’s Anatomy: A Closer Look at the Parts of a Circle

A circle is defined by its center and radius; the diameter is twice the radius, a chord joins any two points on the circle, and a tangent touches it at exactly one. The examples below name each part and show how they relate, with practice problems. Circles are fascinating, aren’t they? They’re all around us, […]

The Great Math Tour: Exploring the World of Circle Graphs

The Great Math Tour: Exploring the World of Circle Graphs

Journey to the Stars: How to Solve Circles Word Problems

Journey to the Stars: How to Solve Circles Word Problems

How to Find the Area of a Quarter Circle?

How to Find the Area of a Quarter Circle?

How to Find the Central Angle of a Circle?

How to Find the Central Angle of a Circle?

Conic Sections

Conic Sections

The Unit Circle

The Unit Circle

Classifying a Conic Section (in Standard Form)

Classifying a Conic Section (in Standard Form)