Parts of a Circle Vocab

Front

What is a Tangent?

Back

A line that touches a circle at exactly one point.

Front

What is an Inscribed Angle?

Back

An angle formed by two chords in a circle which have a common endpoint.

Front

What is a Chord?

Back

A segment that connects two points on a circle; it may or may not pass through the center.

Front

What is a Major Arc?

Back

An arc that is larger than a semicircle.

Front

What is a Central Angle?

Back

An angle whose vertex is at the center of the circle and whose sides are radii.

Front

What is a Minor Arc?

Back

An arc that is smaller than a semicircle.

Front

What is a Diameter?

Back

A chord that passes through the center of the circle, the longest chord.

Front

What is a Sector?

Back

A region of a circle bounded by two radii and the arc between them.

Front

What is a Radius?

Back

A segment from the center of the circle to any point on the circle.

Front

What is a Secant?

Back

A line that intersects a circle at two points.