Geometry Circle Vocabulary

How many degrees are in a cirlce?

• 90
• 180
• 270
• 360

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

An arc is a smaller piece of the...

• Chord
• Center
• Circumference
• Radius

A tangent line of a circle is...

• It's diameter
• It's radius
• It's circumference
• A line that touches the circle only once

What is this called?

• Tangent Line

• Secant

• Chord

• Diameter

What is the green area called?

• sector

• segment

• arc

• section

What best describes segment AB?

• chord
• secant
• tangent
• diameter

What can this formula be used to find?

• area of a circle
• arc length of an arc
• sector area
• circumference of a circle

Tags

CCSS.7.G.B.4

What is this called?

• Diameter

• Secant

• Tangent Line

• Radius

Tags

CCSS.HSG.C.A.2

Define 'Semicircle'

• An arc on a circle that is exactly 180 degrees
• An arc on a circle that measures 90 degrees
• An arc on a circle that connects two points on the circle
• An arc that goes all the way around a circle

What is the part of the circle highlighted in red called?

• semi-circle arc
• major arc
• minor arc
• sector