Circles: Definitions, Central Angles, Arcs

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

• Tangent
• Secant
• Radius
• Arc

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

• right angle

• acute angle

• inscribed angle

• intercepted angle

Tags

CCSS.HSG.C.A.2

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

Which is true of a minor arc?

• It forms half a circle.
• It forms a whole circle.
• It measures greater than 180 degrees. 
• It measures less than 180 degrees.

Tags

CCSS.HSG.C.B.5

Which is true of a major arc?

• Forms half a circle.
• Forms a whole circle.
• Measures greater than 180 degrees.
• Measures less than 180 degrees.

Name a minor arc

• AD
• ADB
• AB
• CD

Name a major arc.

• ABD
• BDA
• BCD
• DA

What is the measure of arc AD?

• 38
• 142
• 180
• 153

Tags

CCSS.HSG.C.B.5

What is the measure of arc AB?

• 140
• 142
• 180
• 153

Tags

CCSS.HSG.C.B.5