Arcs and Chords

Front

What is a radius in a circle?

Back

A radius is a line segment that connects the center of the circle to any point on its circumference.

Front

What is the relationship between congruent arcs and chords in a circle?

Back

Congruent arcs in a circle have congruent chords.

Front

How do you find the measure of an arc in a circle?

Back

The measure of an arc can be found using the central angle that subtends the arc.

Front

What is the formula for the circumference of a circle?

Back

The circumference (C) of a circle is given by the formula C = 2πr, where r is the radius.

Front

What is the formula for the area of a circle?

Back

The area (A) of a circle is given by the formula A = πr², where r is the radius.

Front

If two chords in a circle are congruent, what can be said about their corresponding arcs?

Back

If two chords are congruent, then their corresponding arcs are also congruent.

Front

What is the relationship between the diameter and the radius of a circle?

Back

The diameter of a circle is twice the length of the radius.

Front

How do you calculate the length of an arc?

Back

The length of an arc can be calculated using the formula: Length = (θ/360) * 2πr, where θ is the central angle in degrees.

Front

What is a chord in a circle?

Back

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

Front

What is the central angle of a circle?

Back

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