Geometry Tangent Lines and Circles

What is the correct definition of a center of a circle?

• A shape with no sides

• The set of points in a plane that are fixed distance from a given point

• The middle of a circle

The Radius of a circle is...

• The middle of the circle

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

• A segment whose endpoints are the center of a circle and a point on the circle

• A line going through a circle

Name the point of tangency of Circle C.

• Point C

• Point F

• Point E

• Point A

What is the value of x?

• 22

• 25

• 15

• 20

What is the definition for a diameter?

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

• A line going through a circle

• A segment whose endpoints are the center of a circle and a point on the circle

• Another word for diagram

Central Angle is ...

• An angle whose vertex is the center of a circle

• An angle whose vertex is on a circle and whose sides contain chords of the circle.

• An obtuse angle inside a circle

• The angle measure of the central angle is 1/2 of the intercepted are.

Click anything that is true about Inscribed Angle

• An obtuse angle inside a circle

• The angle measure of the inscribed angle is 1/2 of the intercepted are

• An angle whose vertex is the center of a circle

• An angle whose vertex is on a circle and whose sides contain chords of the circle.

A tangent line intersects a circle at exactly how many points?

• One

• Two

• Three

• Zero

A line is tangent to a circle if and only if it is perpendicular to a radius. What angle does that represent?

• Right angle

• Acute angle

• Obtuse angle

• Mr. V angle

Is this tangent to the circle?

• Yes

• No