Chord and Arc

How do you apply the Pythagorean theorem to find the length of a chord?

• c = √(r² + d²)

• c = 2 * d

• c = 2 * √(r² - d²)

• c = r² + d²

If the measure of arc ABC = 210°, what is the measure of ∠AOC?

• 150°

• 100°

• 210°

• 105°

A line segment whose endpoints are on a circle.

• semicircle

• concentric circles

• chord

• sector of a circle

What is the value of x?

• 22

• 25

• 15

• 20

Find the radius r

• 2

• 3

• 4

• 5

What is the measure of ∠PTQ?

• 100°

• 140°

• 180°

• 120°

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

• adjacent arcs

• diameter

• Inscribed angle

• arc

An arc that is larger than the semicircle.

• semicircle

• circle

• major arc

• adjacent arcs.

An arc that is smaller than a semicircle.

• radii

• minor arc

• tangent line

• central angle

In  a circle, if a radius or diameter is perpendicular to a chord, then it____ the chord and its arc.

• equals

• bisects

• arcs

• circles