Circle Parts

Front

What is a chord in a circle?

Back

A chord is a line segment with both endpoints on the circle.

Front

Define inscribed angle.

Back

An inscribed angle is formed by two chords in a circle which share an endpoint.

Front

What is a minor arc?

Back

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

Front

What is a major arc?

Back

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

Front

Define 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 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 radius?

Back

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

Front

What is a secant?

Back

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

Front

What is the relationship between a central angle and its intercepted arc?

Back

The measure of a central angle is equal to the measure of its intercepted arc.

Front

How do you identify a major arc?

Back

A major arc is identified by naming the endpoints and including a point on the circle that lies outside the minor arc.