Circle vocab

Front

What is the measure of arc AB if the answer is 68?

Back

The measure of arc AB is 68 degrees.

Tags

CCSS.HSG.C.B.5

Front

What is the segment that connects the center of a circle with a point on the circle?

Back

Radius.

Front

What type of angle has its vertex at the center of a circle?

Back

Central angle.

Front

An inscribed angle is an angle with its vertex _____________ the circle.

Back

on.

Tags

CCSS.8.G.A.5

Front

What is the segment connecting two points on a circle that passes through the center?

Back

Diameter.

Front

What do you call a line that touches a circle at exactly one point?

Back

Tangent.

Front

What is the distance around a circle called?

Back

Circumference.

Front

What is the formula for the circumference of a circle?

Back

C = 2πr, where r is the radius.

Tags

CCSS.7.G.B.4

Front

What is the area of a circle?

Back

A = πr², where r is the radius.

Tags

CCSS.7.G.B.4

Front

What is a chord in a circle?

Back

A segment whose endpoints lie on the circle.