Circles and review

Front

A segment whose endpoints lie on a circle is a _______.

Back

chord

Front

Lines AO and BO are tangent. What is the measure of BO?

Back

10

Front

Two tangents of a circle that meet outside of the circle at one point are _________.

Back

congruent

Front

A line in the same plane as a circle that intersects the circle at exactly one point is a ____________.

Back

tangent

Front

In the diagram, a tangent and a line drawn to the point of tangency form a right triangle. Solve for "?" (the length of the hypotenuse)

Back

15

Front

The longest chord of a circle is called a _________.

Back

diameter

Front

The distance from the center of a circle to any point on the circle is called a __________.

Back

radius

Front

A line that intersects a circle at two points is called a __________.

Back

secant

Front

The angle formed between a tangent and a radius drawn to the point of tangency is always __________.

Back

90 degrees

Front

The area of a circle is calculated using the formula __________.

Back

A = πr²