Scale Factor and Dilations Perimeter and Area

Is Figure B a scaled copy/dilation of Figure A?

• Yes

• No

Tags

CCSS.8.G.A.3

A student draws a scaled copy/dilation of the figure shown with a scale factor greater than 1. Which could be the length of the base of the triangle?

• 2

• 5

• 1/5

• 11

Tags

CCSS.7.G.A.1

A scale factor of 1/2 reduces a figure.

• True

• False

Tags

CCSS.8.G.A.3

The point A (8, 12) was dilated to become point A' (2, 3). What was the scale factor?

• ½

• ¼

• 4

• 2

Tags

CCSS.8.G.A.3

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

• G' (5,3)

• G' (20,12)

• G' (-20,-12)

• G' (-5,-3)

Tags

CCSS.8.G.A.3

State the coordinate of the image of the given point B (4,9) under a dilation with center at the origin with the given scale factor of 2.

• B' (2 , 4.5)

• B' (-8 ,-18)

• B' (8 ,18)

• B' (9 ,4)

Tags

CCSS.8.G.A.3

What is the scale factor from ΔABC to ΔDEF?

• 2

• 3/2

• 2/3

• 1/2

Tags

CCSS.7.G.A.1

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

Tags

CCSS.8.G.A.3

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.

Tags

CCSS.8.G.A.4

CCSS.HSG.SRT.A.2

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