Circle Chords, Arcs, Central Angles, Inscribed Angles

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

In a circle (or congruent circles), congruent central angles:

• are 60 degrees

• have congruent points

• have congruent arcs

• spell out the word "dracula"

If Circle M is congruent to Circle O, then:

• all of their central angles must be congruent

• both circles have centers named "P"

• both circles have congruent radii

• both circles have X-Box Ones

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

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

A ____ is a line, ray, or segment that intersects a circle at two points.

• Tangent

• Secant

• Radius

• Arc

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

Find the value of x.

• 15

• 13

• 3

• 6

Find the radius r

• 2

• 3

• 4

• 5