Chords and Circles

In a circle, if a diameter is is perpendicular to a chord, then:

• it bisects the chord

• it bisects the corresponding arc

• it bisects BOTH the chord and its arc

• none of these answers are correct

In a circle, if a diameter bisects a chord (that is not a diameter), then:

• it is a secant

• it is parallel to the chord

• it is perpendicular to the chord

• it is just shaking out the sillies

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

• 150°

• 100°

• 210°

• 105°

An angle is a(n) ______ if the vertex is on a circle and the sides of the angle are shords of the circle.

• right angle

• acute angle

• inscribed angle

• intercepted angle

Chords AB and AD are congruent. Arc AB is 96°. What is the measure of arc BAD?

• 96°

• 48°

• 192°

• 168°

Find the degree measure of Arc WV.

• 167

• 23

• 20

• 172

• 278⁰
• 297⁰
• 90⁰
• 105⁰

If 2 chords in a circle are congruent, then their arcs are ___?

• Congruent

• Parallel

• Perpendicular

• Half

Chords AB and CD are congruent. If arc AB is 54°, what is the measure of arc CD?

• 108°

• 54°

• 27°

• 81°

Find the value of x.

• 26

• 24

• 30

• 20