Dilations and Scale Factor

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

• True
• False

Tags

CCSS.8.G.A.3

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

• True
• False

Tags

CCSS.8.G.A.3

What is the formula for scale factor?

Tags

CCSS.7.G.A.1

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 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

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

What is the definition of dilations in mathematical terms?

• to make larger or smaller
• to make larger
• none of the above
• to make smaller

Tags

CCSS.8.G.A.3

_________ ________ is the number you multiply by the sides to create a similar figure.

• Scale Factor
• Corresponding Angle
• Pi
• Mid Point

Tags

CCSS.7.G.A.1

Is this an enlargement or reduction? (blue = original image)

• reduction

• enlargement

Tags

CCSS.8.G.A.3

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

• 1/2
• 7/3
• 2
• 10/3

Tags

CCSS.7.G.A.1