Similar Figures and Dilations Study Guide

Dilate the figure by a scale factor of 3 with the origin as the center of dilation. What are the coordinates of the image?
A(3,3) B(6,6) C(9,3)

• A'(9,9) B'(18,18) C'(27,9)
• A'(6,6) B'(9,9) C'(12,6)
• A'(0,0) B'(3,3) C'(6,0)
• A'(1,1) B'(2,2) C'(3,1)

Tags

CCSS.8.G.A.3

State the coordinate of the image of the given point B (-10,-6) under a dilation with center at the origin with the given scale factor k = 1/2.

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

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

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

• addition 
• subtraction 
• multiplication 
• division 

Tags

CCSS.8.G.A.3

A scale factor of less than one means

• that the image will be larger than the pre-image.
• That the image will be the same as the pre-image.
• That you need to subtract that amount off  of each side.
• That the image will be a reduction of the pre-image.

Tags

CCSS.8.G.A.3

What is the definition of dilations ,in mathematical terms?

• to make larger or smaller
• to make larger
• all of the above
• to make smaller

Tags

CCSS.8.G.A.3

Does the image show a Dilation?

• Yes
• No

Tags

CCSS.HSG.CO.A.2

Find the measure of x:

• 6
• 24
• 33
• 36

Tags

CCSS.HSG.SRT.A.2

A dilation with a scale factor GREATER THAN 1 results in a(n) ________.

• Reduction

• Enlargement

• Stays the same

A dilation with a scale factor EQUAL TO 1 results in a(n) ________.

• Reduction

• Enlargement

• Stays the same

Tags

CCSS.8.G.A.3