Unit 8a Review: Circles

Question 1

Where is the tallest mountain in the solar system?

Accepted Answer

Mars

Question 2

In the circle below, what is the measure of ∠ADB? Assume point C is the center of the circle

Accepted Answer

90 degrees

Question 3

What is the best definition of a diameter?

Accepted Answer

A segment that cuts a circle in half, The longest possible segment inside a circle

Question 4

Where does the planet name "Mars" come from?

Accepted Answer

Roman god of war

Question 5

Given a circle with a diameter of 18 centimeters, calculate the radius

Accepted Answer

9 cm

Question 6

What special circle angle is shown below?

Accepted Answer

Exterior angle

Question 7

In the diagram below, calculate arc AB

Accepted Answer

40 degrees

Question 8

What special circle angle is shown below?

Accepted Answer

Interior angle

Question 9

What special circle angle is shown below?

Accepted Answer

Central angle

Question 10

In the diagram below, calculate angle x

Accepted Answer

50 degrees

Question 11

Does Mars have a ring?

Accepted Answer

No, but it will in 30 million years

Question 12

Which equation below gives the area of a circle?

Accepted Answer

A = πr2

Question 13

Given a circle with a radius of 12 centimeters, calculate the diameter

Accepted Answer

24 cm

Question 14

Which equation below links the radius of a circle to its diameter?

Accepted Answer

d = 2r, r = d/2

Question 15

What is the best definition of a chord?

Accepted Answer

A segment starting and stopping on a circle

Question 16

What is the measure of arc DC?

Accepted Answer

50 degrees

Question 17

Which equation below gives the circumference of a circle?

Accepted Answer

C = πd, C = 2πr

Question 18

Which civilization first recorded observing Mars?

Accepted Answer

Ancient Egyptians

Question 19

In the diagram below, calculate angle x

Accepted Answer

30 degrees

Question 20

What is the best definition of a tangent?

Accepted Answer

A line outside a circle touching at one point

Question 21

Of the total 40 missions to Mars, how many have been successful?

Accepted Answer

18

Question 22

What is the best definition of a circle?

Accepted Answer

Set of all points equidistant from a center

Question 23

What special circle angle is shown below?

Accepted Answer

Exterior angle

Question 24

What is the measure of arc BC?

Accepted Answer

80 degrees

Question 25

What special circle angle is shown below?

Accepted Answer

Inscribed angle

Question 26

What is the best definition of a radius?

Accepted Answer

Distance from a circles center to any point on the edge

Question 27

What is the best definition of a secant?

Accepted Answer

Line in a circle going through at least one side, A segment starting and stopping on a circle

Unit 8a Review: Circles

Questions 27

Unit 8a Review: Circles

Questions 27