CW: Dilations

Match the terms with their definitions.

• A transformation that turns a figure around a point.

• Rotation

• A transformation that slides a figure.

• Translation

• A transformation that flips a figure across a line.

• Reflection

• A transformation that makes a scale copy

• Dilation

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

When a dilation has a scale factor greater than one, the dilation is an enlargement.

• True
• False

Tags

CCSS.8.G.A.3

When the scale factor of a dilation is between 0 and 1, the dilation is a reduction (shrinks).

• True
• False

Tags

CCSS.8.G.A.3

Point B (-10,-6) is dilated with a scale factor of 1/2 and the center of dilation at the origin. What are the coordinated of B'?

• (5,3)
• (20,12)
• (-20,-12)
• (-5,-3)

Tags

CCSS.8.G.A.3

Figure DMPN is dilated to form figure D'M'P'N. What is the scale factor?

• 2
• 3
• 1/3
• 1/2

Tags

CCSS.8.G.A.3

The point (8, 12) was dilated to become point (2, 3). What was the scale factor?

• ½
• ¼
• 4
• 2

Tags

CCSS.8.G.A.3

Triangle ABC is dilated using a scale factor of 1/2. The center of dilation is at the origin. What are the new coordinates of point A'?

• (-3, 3)
• (-12, 12)
• (-2, 2)

Tags

CCSS.8.G.A.3

Tags

CCSS.8.G.A.3

Figures A, B, C, and D are drawn. The center of dilation is point E. Which of the following figures are similar to figure A? Choose all correct answers.

• Figure B

• Figure C

• Figure D

Tags

CCSS.8.G.A.4

CCSS.HSG.SRT.A.2

Triangle EFG is drawn on the coordinate plane. The triangle is dilated by a scale factor of 1/3, with the center of dilation at the origin, to form triangle E'F'G'. What is the coordinate of E' ?

(a)  

Tags

CCSS.8.G.A.3