Circle Vocab #1

Front

What is the radius of a circle?

Back

The measurement from the center of a circle to an edge of the circle.

Front

What is a segment whose endpoints are on the circle?

Back

Chord

Front

What type of tangent line is RS?

Back

Internal

Front

What is a line in the plane of a circle that intersects a circle at exactly two points?

Back

Secant line

Front

What best describes segment AB if it connects two points on the circle?

Back

Chord

Front

What is the diameter of a circle?

Back

A segment that passes through the center of the circle and has endpoints on the circle.

Front

What is the circumference of a circle?

Back

The distance around the circle.

Front

What is a tangent line?

Back

A line that touches the circle at exactly one point.

Front

What is the difference between a secant line and a tangent line?

Back

A secant line intersects the circle at two points, while a tangent line touches the circle at one point.

Front

What is the center of a circle?

Back

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