Scale and Similarity

If the scale factor is less than one, the new figure will be

• an enlargement

• a reduction

• a scale factor

Tags

CCSS.8.G.A.3

What is the scale factor?

• 1/2

• 7/3

• 2

• 10/3

Tags

CCSS.8.G.A.4

CCSS.HSG.SRT.A.2

Are the following similar? Why or why not?

• Yes, because the corresponding angles are congruent.

• No, the numbers are even

• No, the sides are 2 times larger, but the width is the same.

Tags

CCSS.HSG.SRT.A.2

From Denver to Chicago = 3 in. If the scale is 1 in = 300 miles, find the actual distance.

• 300 miles

• 1000 miles

• 900 miles

• 600 miles

Tags

CCSS.7.G.A.1

Scale: 1in.=7ft. The actual width of the backyard is 49 ft, how wide is it in the drawing?

• 14 in 

• 7 in

• 42 in

• 56 in

Tags

CCSS.7.G.A.1

A model of a house was built using the scale 5 in:25 ft. If a window in the model is 1.5 in. wide, how wide is the actual window?

• 90 ft

• 7.5 ft 

• 4.5 ft

• 45 in

Tags

CCSS.7.G.A.1

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

• 4/3

• 2/3

• 3/4

• 2

Tags

CCSS.7.G.A.1

What is the scale factor from the small shape to the big shape?

• 1/2

• 7/3

• 2

• 10/3

Tags

CCSS.7.G.A.1

What is the scale factor from shape A to shape B?

• 1:1

• 2:1

• 3:1

• 1:2

Tags

CCSS.7.G.A.1

What is the scale factor from the smaller triangle to the larger?

• scale factor = 3:2

• scale factor = 1:4

• scale factor = 2:3

• scale factor = 5:3

Tags

CCSS.7.G.A.1