Circles Vocabulary and Rules

What is the part of the circle highlighted in red called?

• semi-circle arc

• major arc

• minor arc

• sector

An angle whose vertex lies on the circle and whose sides are chords of the circle

• inscribed angle 

• central angle

• arc

• radius

An angle whose vertex is the center of a circle

• central angle

• inscribed angle

• minor arc

• major arc

∠BAC is a ________ angle

• major

• central

• inscribed

• obtuse

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

• Point V

• Major Arc

• Semi-Circle

• Minor Arc

• Line PR

• Secant Line

• Point of Tangency

An angle whose vertex is at the center of the circle.

• Central Angle

• Inscribed Angle

• Radius

• Sector

What part of the circle is present?

• diameter

• radius

• chord

• secant

Segments with endpoints on a circle are called _____.

• arcs

• radii

• chords

• polygons

Which of the following names a radius?

• segment AC

• segment DB

• segment AB

• segement BC

What is the part of the circle highlighted in red called?

• semi-circle arc

• major arc

• minor arc

• sector