Similar Triangles and Dilation Quiz

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

Find y.

• 144
• 18
• 72
• 12

Tags

CCSS.HSG.CO.C.9

The point (8, 12) was dilated to become point (2, 3). What was the scale factor? HINT: Is it getting bigger or smaller?

• ½

• ¼

• 4

• 2

Find missing side

• 5
• 7
• 9
• 11

Tags

CCSS.HSG.SRT.B.5

CCSS.HSG.SRT.C.6

CCSS.HSG.SRT.C.8

CCSS.HSG.SRT.D.11

Given that triangle ABC is similar to triangle ADE with AB = 2 cm, BD = 3 cm, and DE = 10 cm. What is the length of side length BC?

• 6.67 cm

• 5 cm

• 4 cm

• 6 cm

Tags

CCSS.HSG.SRT.A.2

• 8 ft
• 12 ft
• 12.5 ft
• 25 ft

Tags

CCSS.HSG.SRT.B.5

The red triangle has been dilated by a scale factor of 1/4, which triangle is it's new image? 

• green triangle 
• red triangle 
• black triangle
• none of these 

Tags

CCSS.8.G.A.3

If two triangles are similar their angles are______.

• proportional

• congruent

• supplementary

• complementary

Tags

CCSS.HSG.SRT.A.2

What is the scale factor from ΔABC to ΔDEF?

• 1/2

• 7/3

• 2

• 10/3

Tags

CCSS.HSG.SRT.A.2

CCSS.8.G.A.4

If the two triangles are similar, what is the measurement of x?

• 2 ft

• 3 ft

• 4 ft

• 6 ft

Tags

CCSS.HSG.SRT.A.2