Circle Definitions and Theorems Vocabulary

What is a Circle?

• all sides congruent and all four right angles.

• a round thing

• the set of points in a plane that are equidistant from a fixed point called the center.

• line that intersects a circle in two points.

What is a Radius?

• line that intersects a circle in two points.

• chord that passes through the center of the circle.

• segment whose endpoints are the center of the circle and a point on the circle.

• segment that connects two points on the circle.

What is a Chord?

• segment that connects two points on the circle.

• chord that passes through the center of the circle.

• the set of points in a plane that are equidistant from a fixed point called the center.

• segment whose endpoints are the center of the circle and a point on the circle.

What does Diameter mean?

• chord that passes through the center of the circle.

• line that intersects a circle in two points.

• segment whose endpoints are the center of the circle and a point on the circle.

• is a prism whose lateral faces are rectangles.

Match the following vocabulary term with its appropriate part of the circle.

• Secant Line

• Major Arc

• Line PR

• Semi-Circle

• Point V

• Minor Arc

• Point of Tangency

Secant is

• line that intersects a circle in two points.

• line in the plane of the circle that intersects the circle in one point.

• two or more circles in the same plane with the same center.

• chord that passes through the center of the circle.

Tags

CCSS.HSG.C.A.2

A Tangent is

• line in the plane of the circle that intersects the circle in one point.

• chord that passes through the center of the circle.

• line that intersects a circle in two points.

• segment whose endpoints are the center of the circle and a point on the circle.

Tags

CCSS.HSG.C.A.2

An Arc is

• set of points in space a given distance from a given point called the center.

• arc whose endpoints are the endpoints of a diameter.

• consists of two points and the continuous part of a circle between them.

• circles that have congruent radii.

Which is the correct way to solve this?

• x=(360-110)/2

• x=110/2

• x=(250-110)/2

• x=(250+110)/2

Tags

CCSS.HSG.C.A.2

Which is the correct way to solve this?

• x=(142-72)/2

• x=(142+72)/2

• 72=(142-x)/2

• 72=(142+x)/2

Tags

CCSS.HSG.C.A.2