Length and Area dilations quiz

Dilations of a triangle are similar to the original triangle.

• True

• False

Are the triangles similar?

• Yes

• No

Find the missing side. Triangle JKL is similar to triangle PQR.

• 24

• 54

• 18

• 72

Find the missing side. Triangle JKL is similar to triangle PQR.

• 6.5

• 26

• 8.7

• 19.5

Triangle ABC with side lengths 5, 12, and 13 will be dilated with a scale factor of 3. What will be the side lengths of the dilated triangle?

• 8, 15, 16

• 15, 36, 39

• 15, 24, 39

• 8, 36, 45

In a dilation what mathematical operation is used with the scale factor?

• addition 
• subtraction 
• multiplication 
• division 

What would be the scale factor in the dilation shown?

• 1/1
• 1/2
• 4/1
• 2/1

If a line segment has a length of 12 units and after a dilation the image length is 4 units, what was the scale factor?

• 3
• 1/3
• 8

segment AB is 3 units long if it were dilated by a factor of 5 ... How long would segment A'B' be

• 15

• 3

• 12

• 3/5

(x, y) -> (2x, 2y) 
What is the coefficient 2 mean?

• plot 2 to the right and 2 up
• scale factor is 2 creating a new figure half the size
• scale factor is 2 making a figure twice the 
  original
• I don't understand this question : (