Dilations and Similarity

Given triangle ABC is a dilated image of triangle JKL, the pre-image, with a scale factor of 4, which of the following proportions are true? Select all that apply.

Tags

CCSS.7.G.A.1

• BC

• AC

• MD

• MC

Tags

CCSS.HSG.SRT.B.4

Find y.

• 144

• 18

• 72

• 12

Tags

CCSS.HSG.SRT.B.4

To measure the distance across a pond, a surveyor locates points A, B, C, D, and E as shown.  Find the length of AB to the nearest meter.

• 10

• 12

• 15

• 18

Tags

CCSS.HSG.SRT.B.4

Complete the following transformation if Triangle ABC is transformed to make similar Triangle DEF.

• Point B, Scale Factor EF/BC

• Point B, Scale Factor BC/EF

• Point C, Scale Factor EF/BC

• Point C, Scale Factor BC/EF

Tags

CCSS.8.G.A.4

CCSS.HSG.SRT.A.2

What similarity theorem would prove that these triangles are similar?

• SAS∼

• SSS∼

• AA∼

• Side Splitter

Tags

CCSS.HSG.SRT.B.5

How do these triangles appear to be similar?
(Hint: Look for non-labeled parts!)

• AA

• SAS

• SSS

• Not Similar

Tags

CCSS.HSG.SRT.B.5

Determine whether the triangles are similar.

• SSS~

• AA~

• SAS~

• not similar

Tags

CCSS.HSG.SRT.B.5

What is the algebraic rule for the dilated image?

• ( x , y ) --> ( 3x, 3y )

• ( 3x, 3y ) --> ( x , y )

• (x , y) --> (0.3x , 0.3y)

• ( x , y ) --> ( 2x, 2y )

Tags

CCSS.HSG.CO.A.2

Choose the correct scale factor:

• 2

• 3

• 1/3

• 1/2

Tags

CCSS.HSG.CO.A.2