Circle vocab

A round plain figure whose boundary is equal from center

• Chord

• Radius

• Tangent

• Circle

Line from center of circle to a point on the perimeter

• Tangent

• Secant

• Radius

• Arc

A half of a circle and half the circumference

• Major arc

• Semi circle

• Center angle

• Circle

Line segment that passes through the center of the circle

• Diameter

• Tangent

• Secant

• Major arc

An angle where the vertex is on the exterior of the circle

• Central angle

• Inscribed angle

• Minor arc

• Point of tangency

A line segment from one endpoint of the circle to another

• Minor arc

• Chord

• Semi circle

• Arc

Part of the curved circumference of the circle

• Arc

• Semi circle

• Radius

• Tangent

An angle of the circle where are the vertex is at the center

• Diameter

• Inscribed angle

• Major arc

• Central angle

A line that intersects a circle in two different places

• Secant

• Tangent

• Chord

• Arc

The point where the tangent line and circle meet

• Point of tangency

• Tangent

• Inscribed angle

• Minor arc