Dilations

A triangle has vertices with coordinates (2,0), (3, -1) and (-2,-5). If the triangle is dilated by a scale factor of 3 with the origin as the center of dilation, what are the coordinates of the vertices of the image?

• (5,3), (6,2), (1,-2)
• (6,0), (9,-3), (-6,-15)
• (2/3,0), (1,-1/3), (-2/3,-5/3)
• (-1,-3), (0,-4), (-5,-8)

Tags

CCSS.8.G.A.3

Choose the correct scale factor:

• 2
• 3
• 1/3
• 1/2

Tags

CCSS.8.G.A.3

 A dilation can produce a larger figure or a(n)______
use a synonym for larger

• reduction
• enlargement
• scale factor
• center of dilation

Tags

CCSS.8.G.A.3

A dilation can produce a smaller figure or a(n)______
use a synonym for smaller

• reduction
• enlargement
• scale factor
• center of dilation

Tags

CCSS.8.G.A.3

A dilation produces a similar figure

• True
• False

Tags

CCSS.8.G.A.3

A dilation produces a congruent figure

• True

• False

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

• True
• False

Tags

CCSS.8.G.A.3

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

• True
• False

Tags

CCSS.8.G.A.3

The diagram shows ABC and its image A'B'C' after a dilation with a scale factor of 3. What is the center of dilation?

• (8, -6)

• (10, -6)

• (-2, 6)

• (0, 0)

Rectangle ABCD is graphed. What is the length of the image of AB after a dilation of a scale factor of 3 centered at point B?

• 5

• 12

• 15

• 18