Circle basic vocabulary and results

Find the radius of a circle who's diameter is 40 ft.

• 40ft
• 80ft
• 20ft
• 45ft

An arc with a central angle measure of exactly 180^o

• major arc
• diameter
• radius
• semicircle

An angle whose vertex is the center of the circle  

• inscribed angle
• central angle
• minor arc
• diameter

A line in the plane of a circle that intersects a circle at exactly two points

• secant line
• diameter
• chord
• tangent line

An arc with a central angle measure of more than 180^o

• semicircle
• major arc
• minor arc
• inscribed angle

What is the m∠A?

• 20
• 40
• 60
• 30

Tags

CCSS.HSG.C.A.2

What is the m∠HIJ?

• 108
• 216
• 54
• 60

Tags

CCSS.HSG.C.A.2

CCSS.HSG.C.A.3

What is the measure of arc DC?

• 140
• 98
• 122
• 61

Tags

CCSS.HSG.C.A.2

CCSS.HSG.C.B.5

Find the measure of angle BDC.

• 35
• 40
• 75
• 110

Tags

CCSS.HSG.C.A.2

CCSS.HSG.C.A.3

Find the measure of arc AB.

• 17
• 34
• 68
• 146

Tags

CCSS.HSG.C.A.2

CCSS.HSG.C.B.5