Intro to Circles Vocab

The distance around a circle

• Area

• Arc

• Circumference

• Arc Length

A segment with endpoints on the circle

• Arc

• Radius

• Chord

• Inscribed

A segment with endpoints at the center and on the circle

• Radians

• Tangent

• Secant

• Chord

_________________ arcs - Arcs in the same circle/congruent circles that have the same measure

• Bisected

• Congruent

• Concentric

• Circumscribed

A portion of a circle defined by two endpoints

• Adjacent

• Inscribed

• Concentric

• Arc

_________________ arcs- An arc that has endpoints on the sides of an inscribed angle and lies in the interior of the inscribed angle

• Congruent

• Intercepted

• Bisected

• Point of Tangency

_________________ arc - The longest arc connecting two endpoints on a circle

• Central

• Major

• Minor

• Inscribed

An angle or shape that is inside a circle and has all vertices on the circle is said to be _______________________

• Circumscribed

• Intercepted

• Inscribed

• Common

A chord that passes through the center of a circle

• Tangent

• Diameter

• Arc

• Semicircle

_________________ tangent - A line, ray , or segment that is tangent to two circles in the same plane

• Major

• Minor

• Common

• Adjacent