Circles Review

Front

What is the definition of circumference?

Back

The distance around the circle.

Front

How is the angle written for points A, B, and C?

Back

∠ABC

Front

If segment BC is a tangent, what is the length of AC?

Back

61

Tags

CCSS.HSG.C.A.2

Front

What is the definition of a circle?

Back

A set of all points in a plane that are the same distance from a point called the center.

Front

What can you conclude if AB and AC are equal?

Back

AB = AC.

Tags

CCSS.HSG.CO.C.9

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 relationship between the radius and diameter of a circle?

Back

The diameter is twice the radius (d = 2r).

Front

What is a chord in a circle?

Back

A line segment with both endpoints on the circle.

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 tangent line?

Back

A line that touches the circle at exactly one point.