Circles and Tangents

The radius of a circle is

• The measurement from the center of a circle to an edge of the circle.
• The measurement around the circle
• The measurement from and edge of the circle to another edge through the center
• A line perpendicular to the diameter of the circle

The diameter of a circle is:

• The measurement around the circle.
• The distance from an edge of a circle to another edge.
• The distance from the center of the circle to an edge of a circle
• The distance from an edge of a circle to another edge through the center. 

Tags

CCSS.HSG.C.A.2

A tangent line of a circle is...

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

Which best describes segment AB?

• chord
• secant
• tangent
• diameter

Tags

CCSS.HSG.C.A.2

A segment whose endpoints lie on a circle is a _______.

• tangent
• chord
• diameter
• secant

An angle whose vertex is the center of a circle is a(n) ______.

• inscribed angle
• acute angle
• obtuse angle
• central angle

Define 'Inscribed Angle'

• An angle whose vertex is on a circle
• An angle whose vertex is at the center of a circle
• An angle whose legs are diameters
• An angle that is 360 degrees

Define 'Minor Arc'

• An arc on a circle that is less than 180 degrees
• An arc on a circle that is greater than 180 degrees
• A segment on a circle whose endpoints are on the circle
• An arc that is not important

Define 'Major Arc'

• An arc on a circle that is greater than 180 degrees
• An arc on a circle that is less than 180 degrees
• An arc on a circle that is exactly 180 degrees
• A segment on a circle that connects two points more than 180 degrees away from each other

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