Unit 10 Circles Vocab

Front

What is a diameter?

Back

A diameter is a line segment that passes through the center of a circle and has its endpoints on the circle.

Front

What is a radius?

Back

A radius is a line segment from the center of a circle to any point on the circle.

Front

What is a chord?

Back

A chord is a line segment whose endpoints lie on the circle.

Front

What is a central angle?

Back

A central angle is an angle whose vertex is at the center of the circle and whose sides are radii.

Front

What is a tangent?

Back

A tangent is a line that touches the circle at exactly one point.

Front

What is the circumference of a circle?

Back

Front

What is the area of a circle?

Back

Front

What is the relationship between diameter and radius?

Back

Front

What is a secant?

Back

A secant is a line that intersects a circle at two points.

Front

What is the formula for the length of a chord?

Back