Circles

Basics

There are four basic concepts to start studying the circles in geometry.

1. Center or Centre
2. Circumference
3. Radius
4. Diameter

The following basic concepts help you to carry your knowledge on circles to next level.

1. Arc
2. Sector
3. Chord
4. Tangent line
5. Secant
6. Segment

Equations

List of the equations of the circle in different cases with geometric proofs in mathematics.