Definitions of Circles

The set of points equidistant from a given point (the center)

• Circle

• Diameter

• Arc

• Tangent

A line segment drawn from the center of a circle to any point on the circle

• Diameter

• Arc

• Radius

• Tangent

A line segment whose endpoints are points on the circle

• Secant

• Diameter

• Arc

• Chord

A line segment with endpoints on the circle that passes through the center of a circle

• Diameter

• Secant

• Tangent

• Intercepted Arc

A line that intersects a circle at exactly 1 point

• Secant

• Tangent

• Arc

• Intercepted Arc

A line that intersects a circle at exactly 2 points

• Diameter

• Intercepted Arc

• Secant

• Arc

A portion of the edge of the circle between two points.

• Arc

• Intercepted Arc

• Secant

• Chord

An arc with a measure less than 180 degrees.

• Semicircle

• Minor Arc

• Intercepted Arc

• Major Arc

An arc with a measure greater than 180 degrees.

• Semicircle

• Minor Arc

• Intercepted Arc

• Major Arc

The point at which the tangent line intersects the circle.

In the example, Letter Q is considered the what?

• Arc

• Secant

• Point of Tangency

• Chord