Circle Vocabulary

What is the area of a circle with a radius of 7 in?

• 154 square in (using A = πr²)

• 100 square in (using A = πr²)

• 150 square in (using A = πr²)

• 200 square in (using A = πr²)

What is the distance from the center of the circle to any point on the circle?

• Diameter

• Circumference

• Radius

• Chord

What is the distance around a circle?

• Diameter

• Radius

• Circumference

• Area

What is an inscribed angle?

• An angle formed by two chords in a circle which have a common endpoint.

• An angle formed by two tangents to a circle.

• An angle formed by a radius and a tangent to a circle.

• An angle formed by two secants intersecting outside the circle.

What is the area of a circle with a diameter of 10 in?

• 50.3 square in

• 78.5 square in

• 31.4 square in

• 100 square in

What is the longest chord in a circle?

• Radius

• Diameter

• Circumference

• Arc

What is the formula for the circumference of a circle?

• C = πr^2

• C = 2πr or C = πd

• C = 4πr

• C = πd^2

What do you call an angle whose vertex is at the center of the circle?

• Central Angle

• Inscribed Angle

• Reflex Angle

• Acute Angle

This is a picture of ___________.

• Chord

• Scale

• Melody

• Harmony

Find the circumference (to the nearest whole number) if the diameter is 28 in.

• 84 in

• 86 in

• 88 in

• 90 in