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  5. Unit Circle (3b): Introduction (circle Review)
Unit Circle (3B): Introduction (circle review)

Unit Circle (3B): Introduction (circle review)

Assessment

Presentation

Mathematics

11th Grade

Easy

CCSS
7.G.B.4, HSG.C.A.2, HSF.TF.A.2

Standards-aligned

Created by

Fabian Manning

Used 5+ times

FREE Resource

11 Slides • 15 Questions

1

Unit Circle:

Review-Parts of the Circles

Lesson Objective:

  • To enable students to become familiar with the unit circle

  • To use the unit circle to evaluate the trigonometric functions sin, cos and tan for all angles

2

3

DEFINITION: a line that goes from the center of the circle to any point on the circle

FORMULA: Radius = Diameter divided by 2

Unit 4B - Circles - Math 7

RADIUS

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4

DEFINITION: A straight line that goes from one side of a circle to the opposite side AND through the center of the circle.

FORMULA: Diameter = Radius x 2

Unit 4B - Circles - Math 7

DIAMETER

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5

Unit 4B - Circles - Math 7

CIRCUMFERENCE

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6

Dropdown

A line that goes from the center of the circle to any point on the circle is called a ​
.​ ​

7

Dropdown



A straight line that goes from one side of a circle to the opposite side AND through the center of the circle. is called ​


​ ​ ​

8

Dropdown

The distance around the outside of the circle is called ​
​ ​

9

Open Ended

Question image

Based on the diagram shown, how much radius makes a diameter?

10

DEFINITION: a ratio between the circumference and the diameter of a circle. It is approximately 3.14

FORMULA: Circumference divided by diameter

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11

12

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13

14

Dropdown

The number of times that a
can fit around a circle's
is called ​
. There are approximately ​
diameters that can fit within the circumference of a circle.

15

Multiple Choice

What is a straight line that goes through the center of a circle from one side to the opposite side?

1

Diameter

2

Circumference

3

Radius

4

Center

16

Multiple Choice

Question image

Does this picture show the diameter or radius of a circle?

1

Diameter

2

Radius

17

Multiple Choice

What is the line that goes from the center of a circle to any point on the circle?

1

Diameter

2

Circumference

3

Chord

4

Radius

18

Multiple Choice

Question image

Is the red line the radius or the diameter of the circle?

1

Radius

2

Diameter

19

Multiple Choice

Question image

Is the red line the radius or the diameter of the circle?

1

Radius

2

Diameter

20

Multiple Choice

Question image

Is the red line the radius or the diameter of the circle?

1

Radius

2

Diameter

21

Multiple Choice

Question image

What is the radius of the circle?

1

18

2

72

3

38

4

14

22

Multiple Choice

Question image

What is the diameter of the circle?

1

8

2

16

3

10

4

4

23

Multiple Choice

Question image

What is the diameter of the circle?

1

5 inches

2

10 inches

3

3.14 inches

4

15.84 inches

24

25

The lesson on circle review is Complete!

We will next study the Unit Circle

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26

Open Ended

Conduct a short Google search on the Unit Circle and write one thing you understand about unit circles.

Unit Circle:

Review-Parts of the Circles

Lesson Objective:

  • To enable students to become familiar with the unit circle

  • To use the unit circle to evaluate the trigonometric functions sin, cos and tan for all angles

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