Circle Vocabulary

Front

What is a Secant?

Back

A secant is a line that intersects a circle at two points.

Front

What is an Inscribed Angle?

Back

An inscribed angle is an angle whose vertex is on the circle and whose sides are chords of the circle.

Front

What is a Chord?

Back

A chord is a line segment whose endpoints lie on the circle.

Front

What is a Diameter?

Back

A diameter is a chord that passes through the center of the circle, dividing it into two equal halves.

Front

What is a Major Arc?

Back

A major arc is an arc that is larger than a semicircle.

Front

What is a Minor Arc?

Back

A minor arc is an arc that is smaller than a semicircle.

Front

What is a Radius?

Back

A radius is a line segment from the center of the circle to any point on the circle.

Front

What is a Central Angle?

Back

A central angle is an angle whose vertex is at the center of the circle and whose sides are radii.

Front

What is a Semi-Circle?

Back

A semi-circle is an arc that represents half of a circle.

Front

What is the relationship between a Chord and a Diameter?

Back

A diameter is the longest chord in a circle.