Dilations Review

Triangle CAT is formed by dilating triangle DOG. Which of the following is true?

• 
  CAT ≅ DOG

• CAT∼DOG

• ∠C = ∠G

Tags

CCSS.8.G.A.3

A rectangular tin sign comes in three sizes, small, medium and large. All three have similar shapes. If the sides of the smallest sign are tripled to create the largest sign, which statement is true.

• 
  The area of the largest sign is three times the area of the smaller sign.

• The perimeter of the larger sign is three times the perimeter of the smaller sign.

• 
  The perimeter of the larger sign is nine times the perimeter of the smaller sign.

• The area of the smaller sign is nine times the area of the larger sign.

Tags

CCSS.7.G.A.1

Which transformation des NOT preserve congruence?

Tags

CCSS.HSG.CO.A.2

Triangle ABC has coordinates A(2,8), B (4,6), C (6, -4). If ABC is dilated with the origin as the center of dilation to create triangle A'B'C', with coordinates A' (1,4), B'(2,3), and C'(3,-2), what is the rule of the dilation?

Tags

CCSS.8.G.A.3

Tags

CCSS.8.G.A.3

Triangle ABC has been reduced with P as the center of dilation to form triangle A'B'C'.

Which conclusion is correct?

Tags

CCSS.8.G.A.4

CCSS.HSG.SRT.A.2

Rectangle GHJK has coordinates (4, -2), (4,3), (2, -2) and (2,3). If GHJK is dilated with a scale factor of 7, which of the following coordinates could be from rectangle G'H'J'K'?

• 
  (28, -28)

• 
  (14, -14)

• 
  

  (4, 21)

• 
  (9, 10)

Tags

CCSS.8.G.A.3

• 
  The angle measures of ABC are less than than the angle measures of triangle A'B'C'.

• 
  The angle measures of A'B'C' are less than the angle measures of ABC.

Tags

CCSS.8.G.A.3

A transformation is applied to create a new figure. Which transformation does NOT preserve congruence?

• A reflection across the x-axis

• A translation 7 units down

• A dilation by a scale factor of 5

Tags

CCSS.HSG.CO.A.2

Triangle TRW was dilated using the origin as the center of dilation to create triangle XYZ. If a scale factor of 4 is used, what will be the value x-coordinate for point Z?

• 12

• 16

• 4

• 8

Tags

CCSS.8.G.A.3