Circle Terminology

Front

What is the distance from the center of a circle to the boundary of the circle?

Back

Radius

Front

What is the longest chord in a circle?

Back

Diameter

Front

What do you call a line segment whose endpoints lie on the circle?

Back

Chord

Front

What is the term for an angle whose vertex is at the center of the circle?

Back

Central Angle

Tags

CCSS.HSG.C.A.2

Front

What is the term for an angle whose vertex is on the circle and whose sides contain chords of the circle?

Back

Inscribed Angle

Front

What is the measure of a full circle in degrees?

Back

360 degrees

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Front

What is the term for a part of the circumference of a circle?

Back

Arc

Front

What do you call an arc that is less than a semicircle?

Back

Minor Arc

Tags

CCSS.HSG.C.B.5

Front

What do you call an arc that is more than a semicircle?

Back

Major Arc

Front

What is the term for a line that intersects a circle at two points?

Back

Secant