Circle Terminology

Front

What is a Semi-Circle?

Back

A Semi-Circle is half of a circle, formed by a diameter and the arc connecting its endpoints.

Front

What is a Secant?

Back

A Secant is a line that intersects a circle at two points.

Front

What is the Radius of a circle?

Back

The Radius is the distance from the center of the circle to any point on its boundary.

Front

What is a Major Arc?

Back

A Major Arc is an arc that is larger than a semi-circle, covering more than half of the circle.

Tags

CCSS.HSG.C.B.5

Front

What is a Minor Arc?

Back

A Minor Arc is an arc that is smaller than a semi-circle, covering less than half of the circle.

Tags

CCSS.HSG.C.B.5

Front

What is a Chord?

Back

A Chord is a line segment whose endpoints lie on the circle.

Front

What is a Diameter?

Back

A Diameter is a chord that passes through the center of the circle, and it is twice the length of the radius.

Tags

CCSS.HSG.C.A.2

Front

What is a Central Angle?

Back

A Central Angle is an angle whose vertex is at the center of the circle and whose sides are radii.

Tags

CCSS.HSG.C.A.2

Front

What is an Inscribed Angle?

Back

An Inscribed Angle is an angle formed by two chords in a circle which have a common endpoint.

Tags

CCSS.HSG.C.A.2

Front

How do you calculate the circumference of a circle?

Back

Tags

CCSS.7.G.B.4