Circle Vocabulary

Front

This is a picture of ___________.

Back

Chord

Front

The distance from the center of a circle to the boundary of a circle (half of the diameter).

Back

Radius

Front

This is a picture of ___________.

Back

Diameter

Front

What is this called?

Back

Tangent Line

Front

This is a picture of ___________.

Back

Radius

Front

A line segment that connects two points on a circle.

Back

Chord

Front

The longest chord in a circle, passing through the center.

Back

Diameter

Front

A line that touches a circle at exactly one point.

Back

Tangent Line

Front

A line that intersects a circle at two points.

Back

Secant

Front

An angle formed by two chords in a circle that share an endpoint.

Back

Inscribed Angle