Honors Geometry

Section 8.1Ratio and Proportion

Please select a Team.

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1. Team 1

2. Team 2

3. Team 3

4. Team 4

5. Team 5

6. Team 6

7. Team 7

8. Team 8

9. Team 9

10.Team 10

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VocabA comparison of two numbers/quantities using division.

Ratios are written three ways: a to b, or a:b a

b

1000 16,00020

7 ft21 3 ft

7

63

1

9

Example of a Ratio: The “Ratio” of the width to length of the rectangle is 2 to 5

2 in

5 in2

5

2:5

Note: Convert thelarger unit.

.

a. b. c. d.

0 000

a.

b.

c.

d. .

.A

.B

.C

.D

CHECKPOINT

25

1

40

2.5

5

2

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a. b. c. d.

0 000

a.

b.

c.

d. .

.A

.B

.C

.D

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2

120

8

1

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4 34 3

4 3

8 6

14

4 14

4x

3x

1612

VocabAn equation that equates two ratios

a c

b d 1 10

2 20

in in

in in

In the proportion , a and d are the extremes a c

b d

In the proportion , b and c are the means a c

b d

ad bc

b

ad

c

3 8

3 12 812

5

.

a. b. c. d.

0 000

a.

b.

c.

d. .

.A

.B

.C

.D

CHECKPOINT

0.17r

73.5r

6r

7r Response Grid

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.

a. b. c. d.

0 000

a.

b.

c.

d. .

.A

.B

.C

.D

CHECKPOINT

8x

2x

12x

8x Response Grid

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10

60

5

60

10 5

x60

10 5

x

5 600x 120x

120 10

Team Scores200 Team 3

200 Team 9

200 Team 5

200 Team 2

200 Team 8

200 Team 6

200 Team 7

200 Team 1

166.67 Team 4

• End

Honors Geometry

Section 8.1Ratio and Proportion

Vocab

Example of a Ratio: The “Ratio” of the height to width of the rectangle is 2 to 5

Vocab

60

10 5

x