7.9 scale factor (dilations)

What is a scale drawing?

• A drawing that shows a real object enlarged or reduced
• A drawing of the weight of an object
• A life size drawing of an object
• A drawing that shows all the sides of a building

Tags

CCSS.7.G.A.1

If you want to find the scale factor from one figure to another, which formula should you use?

• Image/Pre-image= scale factor

• Pre-image/Image= scale factor

• pre-image= scale factor

• Image= scale factor

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

If the two figures are similar, what is the length of the missing side (x)?

• 12 cm

• 14 cm

• 21 cm

• 4 cm

Tags

CCSS.HSG.SRT.A.2

Triangle STU is a dilation of Triangle PQR. What is the scale factor in the dilation?

• 3/4

• 1/2

• 2

• 1.5

Tags

CCSS.8.G.A.3

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

• an enlargement
• a reduction
• a scale factor
• bigger

Tags

CCSS.8.G.A.3

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

• a reduction
• an enlargement
• a scale
• not proportional

Tags

CCSS.8.G.A.3

Which side corresponds with side CB?

• Side AB

• Side DE

• Side DF

• Side FE

Tags

CCSS.HSG.SRT.A.2