Dilation Scale Factor Similar Polygons

Complete the following transformation if Triangle ABC is transformed to make similar Triangle DEF. Translate A to D. Rotate around Point D until D, E, and _____ are co-linear. Dilate by ______ with center D.

• Point B, Scale Factor EF/BC

• Point B, Scale Factor BC/EF

• Point C, Scale Factor EF/BC

• Point C, Scale Factor BC/EF

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CCSS.HSG.SRT.A.2

CCSS.8.G.A.4

• BC

• AC

• MD

• MC

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CCSS.HSG.SRT.B.4

What is the scale factor from the small shape to the big shape?

• 1/2

• 7/3

• 2

• 10/3

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CCSS.7.G.A.1

What is the scale factor from ΔDEF to ΔABC?

• 2

• 3/2

• 2/3

• 1/2

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CCSS.7.G.A.1

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

• addition 

• subtraction 

• multiplication 

• division 

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CCSS.8.G.A.3

What is the scale factor from ΔABC to ΔDEF?

• 2

• 3/2

• 2/3

• 1/2

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CCSS.7.G.A.1

If AB = 3 and the scale factor is 4 then how long is A'B'?

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CCSS.8.G.A.3

If the scale factor to map A'B'C' onto ABC is 1/4 then what is the scale factor to map ABC back onto A'B'C'?

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CCSS.HSG.SRT.A.2

CCSS.8.G.A.4

If A'B'=20 and AB=100 then what is the scale factor to map ABC onto A'B'C'? Answer either as a fraction in reduced form or as an integer.

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CCSS.HSG.SRT.A.2

CCSS.8.G.A.4

If the scale factor is greater than 1, the new figure will be

• an enlargement

• a reduction

• a scale factor

• bigger

Tags

CCSS.8.G.A.3