Favorite Color.

1 2 3 4 5

0 0 000

1. Red

2. Blue

3. Green

4. Orange

5. Other

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10

.

a. b. c. d.

0 000

a.

b.

c.

d. .

.A

.B

.C

.D only true for positive real numbers.

always true.

never true.

only true for negative real numbers.

Consider the statement "When finding the sum of 3 real numbers,

the order in which they are added does not matter; adding the

numbers in any order will produce the same total." The statement is:

Response Grid

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15

Geometry

Section 8.3Similar Polygons

Vocab

and the lengths of corresponding sides are proportional.Two polygons such that their corresponding angles are

3

4

5 6

8

10

3

64

85

101

2

6

38

410

52

1or

The ratio of the lengths of two corresponding sides of two

similar polygons.

A

B

CD

E

F

ABC DEF Similar symbol

“small to big” “big to small”

Proportionality Statement

8

64

34

3

4

3

4

3

16

1220

15

12

9

FGHJ KLMN

The “scale factor” is4

3

(HW: 15-18)

.

a. b. c. d.

0 000

a.

b.

c.

d. .

.A

.B

.C

.D

CHECKPOINT

The triangles are not similar.

ABC DEF

ABC EFD

ABC DFE

Response Grid

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“big to small”

4 156x 39x

39

The “scale factor” is13

or 13: 2 or 13 to 22

KL

PQLM

QRMN

RS

NK

SP

The perimeters have the same “scale factor” as the corresponding sides

Corresponding angles are .Corresponding sides are proportional

9 12 15 3

6 8 10 2 PQR VTS

Scale factor

The ratio of the perimeters is3

or 3 : 2 or 3 to 22

Perimeter

(HW: 19,20,22-24,27,28)Example 3

“big to small”

=x2

96

6 18x 3x

(HW: 21,25,26,39-42)4

.

a. b. c. d.

0 000

a.

b.

c.

d. .

.A

.B

.C

.D

CHECKPOINT

6x

37.5x

10.7x

6.4x

Response Grid

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Team Scores1 Red

0.86 Blue

0.83 Orange

0.8 Green

0.67 Other

• End

Geometry

Section 8.3Similar Polygons

Vocab

3

4

5 6

8

10

or

A

B

CD

E

F

(HW: 15-18)

(HW: 19,20,22-24,27,28)Example 3

=

(HW: 21,25,26,39-42)4