Parts of a Circle

Front

What is the value of Pi (π) approximately?

Back

3.14

Front

What is the measurement around the outside of a circle called?

Back

Circumference

Front

What is the line that goes from the center of a circle to any point on the circle?

Back

Radius

Front

What is twice as long as a radius?

Back

Diameter

Front

What is the longest chord in a circle?

Back

Diameter

Front

What do you call a line segment that connects two points on the circle?

Back

Chord

Front

What is the distance from the center of the circle to the edge called?

Back

Radius

Front

What is the formula for the circumference of a circle?

Back

C = 2πr or C = πd

Front

What is the area of a circle formula?

Back

A = πr²

Front

What is a sector of a circle?

Back

A region bounded by two radii and the arc between them.