Dilations Review

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

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

Quadrilateral LMPQ is shown on the coordinate grid. It will be dilated with the origin as the center of dilation using the rule (x, y) -> (ax, ay) to create quadrilateral L'M'P'Q'. If vertex P' will be located at (16.5, 5.5), what is the value of the scale factor a?

• 2.5

• 2.75

• .5

Tags

CCSS.8.G.A.3

Click the picture. Then answer the question.

Tags

CCSS.8.G.A.3

Which of the following algebraic rules represents a dilation?

• (x, y) --> (3x, 3y)

• (x, y) --> (3x, 2y)

• (x, y) --> (x - 3, y + 5)

• (x, y) --> (0.5x, 0.5y)

• (x, y) --> (3x, 0.5y)

Tags

CCSS.8.G.A.3

State the coordinate of the image of the given point B (4,9) under a dilation with center at the origin with the given scale factor of 2.

• B' (2 , 4.5)

• B' (-8 ,-18)

• B' (8 ,18)

• B' (9 ,4)

Tags

CCSS.8.G.A.3

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

Tags

CCSS.8.G.A.3

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