7.1 and 7.2 Practice

When the scale factor of a dilation is less than one, the dilation is a reduction.

• True
• False

Tags

CCSS.HSG.SRT.A.1

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

• True
• False

Tags

CCSS.HSG.SRT.A.1

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.HSG.SRT.A.1

CCSS.HSG.SRT.A.3

Dilate Point B by a scale factor of 1/2

• (1.5,-4)
• (-1.5,1)
• (-1,-1.5)
• (-2,-2)

Tags

CCSS.HSG.CO.A.2

CCSS.HSG.SRT.A.1

State the coordinates of point A after a dilation, with the center of dilation at (0,0), and a scale factor of 1/2.

• (2,2)

• (8,8)

• (0,12)

• (4,12)

Tags

CCSS.8.G.A.3

What scale factor was used to produce the image?

• 2
• -2
• ¹/₂
• 1

Tags

CCSS.HSG.SRT.A.1

The two right triangles below are similar. What is x, the missing side length in triangle DEF? 

• 3.75
• 9.75
• 10
• 12

Tags

CCSS.HSG.SRT.A.2

CCSS.HSG.SRT.A.3

CCSS.HSG.SRT.B.5

CCSS.HSG.SRT.C.6

All angles in similar figures are congruent.  

• True
• False

Tags

CCSS.HSG.SRT.A.2

CCSS.HSG.SRT.A.3

CCSS.HSG.SRT.B.5

Solve for x. 

• 8
• 6
• 10
• 12

What is the scale factor from ΔDEF to ΔABC?

• 1/2
• 7/3
• 2
• 10/3