Circles

Front

What is a chord in a circle?

Back

A chord is a line segment that connects two points on the outside of a circle.

Front

What is a diameter in a circle?

Back

A diameter is a chord that passes through the center of the circle, connecting two points on the outside.

Front

True or false: A diameter is a chord.

Back

True

Front

What is the circumference of a circle?

Back

The circumference is the distance around the outside (perimeter) of the circle.

Front

True or false: The diameter is 2 times the radius.

Back

True

Front

What is the radius of a circle?

Back

The radius is the distance from the center of the circle to any point on the outside.

Front

How do you find the diameter if you know the radius?

Back

Multiply the radius by 2.

Front

What is the relationship between diameter and radius?

Back

The diameter is always twice the length of the radius.

Front

What does it mean for a line to be tangent to a circle?

Back

A tangent line touches the circle at exactly one point.

Front

What is the center of a circle?

Back

The center is the point that is equidistant from all points on the circle.