Dilation Practice

The __________ is the ratio of a length of the image to the corresponding length on the original figure.

• reduction
• enlargement
• scale factor
• center of dilation

Tags

CCSS.7.G.A.1

A scale factor of less than one means

• that the prime image will be larger than the pre-image.
• That the prime image will be the same as the preimage.
• That you need to subtract that amount off  of each side.
• That the prime image will be a reduction of the preimage.

Tags

CCSS.7.G.A.1

A triangle has vertices A(0,0), B(8,0), C(3,-2). Find the coordinates of the triangle after a dilation with a scale factor of  4. The dilation is (X,Y) --- (4x,4y)

• A(3,3), B(4,4), C(-3,-4)
• A(-4,8), B(6.5,8), C(7,7)
• A(0,0), B(32,0), C(12,-8)

Tags

CCSS.8.G.A.3

Choose the correct scale factor:

• 2
• 3
• 1/3
• 1/2

Tags

CCSS.8.G.A.3

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

What is the perimeter of the square after being dilated by a scale factor of 1/2?

• 40

• 20

• 10

• 80

Tags

CCSS.7.G.A.1

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

• (5,3)
• (20,12)
• (-20,-12)
• (-5,-3)

Tags

CCSS.8.G.A.3

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

• ½
• ¼
• 4
• 2

Tags

CCSS.8.G.A.3

What is the scale factor used to dilate the small square to the larger square given there areas?

• 4
• 16
• 3
• 12

Tags

CCSS.7.G.A.1

A dilation that is an enlargement has a scale factor that is _______.

• Any positive number

• Between 0 and 1

• Negative

• Greater than 1

Tags

CCSS.8.G.A.3