Circles, Chords, Arcs, and Angles

Find the segment length indicated. Assume that lines which appear to be tangent are tangent.

• 8

• 1.5

• 2

• 2.3

Name the part shown in the given circle.

• Circumference

• Tangent

• Sector

• Radius

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

• equal to twice the measure of its corresponding inscribed angle

• equal to the measure of its corresponding inscribed angle

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

• equal to four cups of wheat flour

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

A(n) _____ to a circle is a line, ray or segment in the plane of the circle that intersects the circle in exactly one point.

• tangent

• secant

• radius

• arc

Segments with endpoints on a circle are called _____.

• arcs

• radii

• chords

• polygons

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

• right

• acute

• obtuse

• straight