Circle Geometry Vocabulary

The set of all points in a plane that are equidistant from a given point in that plane

• Center

• Circle

• Diameter

• Chord

• Secant

The set of all points in a plane that are given distance from a given point.

• circumference

• Circle

• semi circle

• tangent line

Tags

CCSS.HSG.CO.A.1

The given point from which all points on a circle are equidistant.

• arc

• radius

• center or a circle

• chord

Circles that lie in the same plane and have the same center.

• arc

• concentric circles

• central angle

• secant line

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

Point C is...

• On the circle

• Outside the circle

• Inside the circle

• Between B and D

Tags

CCSS.4.G.A.1

A tangent line of a circle is...

• It's diameter

• It's radius

• It's circumference

• A line that touches the circle only once

How many degrees are in a cirlce?

• 90

• 180

• 270

• 360

Tags

CCSS.HSG.CO.A.1

CCSS.4.MD.C.5B

A line that intersects a circle at two points is a ______________.

• tangent

• secant

• diameter

• chord

An arc is...

• A line that passes through the center and goes from edge to edge.

• A part of the circumference.

• A boat.

• A line that touches the circle once.