Circles, chords, and arcs

Front

What is the definition of a radius in a circle?

Back

The measurement from the center of a circle to an edge of the circle.

Front

What happens when a diameter bisects a chord that is not a diameter?

Back

It is perpendicular to the chord.

Front

In a quadrilateral inscribed in a circle, what is true about opposite angles?

Back

They are supplements of each other.

Front

How is the measure of an arc related to its corresponding inscribed angle?

Back

The measure of an arc is equal to twice the measure of its corresponding inscribed angle.

Front

What is a chord in a circle?

Back

A line segment with both endpoints on the circle.

Front

What is a secant line in relation to a circle?

Back

A line that intersects the circle at two points.

Front

What is the relationship between a diameter and a radius?

Back

The diameter is twice the length of the radius.

Front

What is the definition of a tangent line to a circle?

Back

A line that touches the circle at exactly one point.

Front

What is the central angle of a circle?

Back

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

Front

What is the formula for the circumference of a circle?

Back

C = 2πr, where r is the radius.