Chords Arcs Circles

Solve for x.

• 3.6

• 9.2

• 11.5

• 14.3

In a circle (or congruent circles), the measure of an arc is:

• equal to half of the measure of its corresponding central angle

• equal to the measure of its corresponding central angle

• equal to the measure of its circle's radii

• only calculated by taking the square root of dragon taxis

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°

Segments with endpoints on a circle are called _____.

• arcs

• radii

• chords

• polygons

Find the radius r

• 2

• 3

• 4

• 5

In the diagram, TP and TQ are tangents to circle O. Determine the value of x. (Note the angles with single arcs are not necessarily congruent in this diagram.)

• 70

• 110

• 140

• 90

Which best describes segment AB?

• chord

• secant

• tangent

• diameter

A tangent line intersecting with a radius always creates a ____________ angle

• right

• acute

• obtuse

• straight