Scale Factor and Corresponding Parts

1.

Multiple Choice

2 mins

1 pt

Which of the following is a scaled copy of figure A?

B

C

D

2.

Multiple Choice

2 mins

1 pt

Identify the side length in Figure 1 that corresponds to the side length MQ in figure 2.

BC

AE

CD

DE

3.

Multiple Choice

2 mins

1 pt

Which side length on the scaled copy corresponds to the side length HJ on the original image?

AB

BC

AC

4.

Multiple Choice

2 mins

1 pt

Is Figure B a scaled copy of Figure A? How do you know

Yes. The scale factor is 1/2 or Divide by 2

No

Yes. The scale factor is 2

5.

Multiple Choice

15 mins

1 pt

What is the scale factor from ΔABC to ΔDEF?

1/2

7/3

2

10/3

6.

Multiple Choice

15 mins

1 pt

What is the scale factor? The shape on the LEFT is the original.

4

.25

5

6

7.

Multiple Choice

2 mins

1 pt

What is the scale factor from the small fry to the large fry?

1/3

48

4

3

8.

Multiple Select

2 mins

1 pt

Which of the following are scaled copies of the original image? Select ALL that apply

A

B

C

D

9.

Multiple Choice

2 mins

1 pt

What is the corresponding angle ACB?

Line Segment CBA

Line Segment ABC

Line Segment XZY

Line Segment ZYX

10.

Multiple Choice

2 mins

1 pt

Triangle ABC and XYZ are similar. What is the scale factor from ABC to XYZ

2

2.5

2/5 or .4

10

11.

Multiple Choice

2 mins

1 pt

In congruent triangles, corresponding parts are always ______.

opposite

equal

equilateral

acute

12.

Multiple Choice

2 mins

1 pt

ΔEDF ≅ Δ____

ABC

CAB

BAC

13.

Multiple Choice

2 mins

1 pt

ΔXYZ ≅ Δ ____

CAB

BAC

ABC

14.

Multiple Choice

2 mins

1 pt

∠E ≅ ∠ __

A

B

C

D

15.

Multiple Choice

3 mins

1 pt

Remember order matters. Which of the following is true?

∆FGH ≅ ∆VHW

∆HFG ≅ ∆HWV

∆HGF ≅ ∆VHW

∆FGH ≅ ∆VWH

16.

Multiple Choice

3 mins

1 pt

These two triangles are congruent. If ∠C is 40^o find the measure of ∠F.

40^o

50^o

90^o

45^o

17.

Multiple Choice

3 mins

1 pt

These triangles are congruent. If ∠E is 45^o and ∠B is 55^o what is the measure of ∠C?

45^o

55^o

80^o

100^o

18.

Multiple Choice

3 mins

1 pt

These triangles are congruent. If ∠A is 48^o what is the measure of ∠F?

48^o

38^o

84^o

94^o

19.

Multiple Choice

1 min

1 pt

Similar figures have the same ______ but different ______.

measure; shapes

sizes; shapes

value; measures

shape; sizes

20.

Multiple Choice

2 mins

1 pt

Line WX corresponds with what line?

ED

VW

BC

ZY

21.

Multiple Choice

5 mins

1 pt

The pair of figures is similar. Find the missing side.

x = 12

x = 3

x = 40

x = 4

22.

Multiple Choice

5 mins

1 pt

Solve for X.

2 ft

3 ft

4 ft

6 ft

23.

Multiple Choice

2 mins

1 pt

Find missing side

5

7

9

11

24.

Multiple Choice

5 mins

1 pt

∠A ≅∠?

∠B

∠E

∠D

∠F

25.

Multiple Choice

2 mins

1 pt

Tell whether the two figures are similar. Explain your reasoning.

Yes, similar because they are the same shape and side lengths are proportional.

No, not similar because they are the same shape, but side lengths are not proportional.

Yes, same shape

No, different sizes

26.

Multiple Choice

2 mins

1 pt

Two objects that are the same shape but not the same size are _______.

Congruent

Vertical

Similar

Complementary

27.

Multiple Choice

3 mins

1 pt

Are the following similar? Why or why not?

Yes

No, the corresponding angles are not equal.

No, the ratios of the corresponding sides are not equal.

28.

Multiple Choice

3 mins

1 pt

Solve for X.

2 ft

3 ft

4 ft

6 ft

29.

Multiple Choice

2 mins

1 pt

Classify the following triangle in as many ways as possible.

Scalene, acute

Isosceles, obtuse

Equilateral, equiangular, acute

Equilateral

30.

Multiple Choice

2 mins

1 pt

Classify the following triangle in as many ways as possible.

Isosceles, Acute

Isosceles, Obtuse

Scalene, Obtuse

Equilateral, Acute

31.

Multiple Choice

2 mins

1 pt

Find the measure of each angle indicated.

139°

66°

138°

116°

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