Dilations

Which scale factor shrinks a figure?

• k = 0

• k =2

• k= 1/3

• k = 1

Tags

CCSS.8.G.A.3

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

Find the dilated coordinate of P' with the given scale factor.

P(–5, –6), Q(–1, 2), R(4, 4), S(1, –3), Scale factor = 2. Write your answer like this (x, y). There are spaces between the commas.

Tags

CCSS.8.G.A.3

Find the dilated coordinate of A' with the given scale factor.

A(2, 6), B(8, 4), C(6, 10), Scale Factor = 3/2, Write your answer like this (x, y). There are spaces between the commas.

• A' = (4/3, 4)

• A' = (3, 9)

• A' = (5/2, 9/2)

• A' = (-1/2, 3/2)

Tags

CCSS.8.G.A.3

Find the coordinates of the image with a scale factor = 1/2.

• (16, 16), (16, 64), (36, 16), (36, 36)

• (6, 6), (6, 10), 8, 6), (8, 8)

• (2, 2), (2, 4), (3, 2), (3, 3)

• ((2, 2), (2, 6), (4, 2), (4, 4)

Tags

CCSS.8.G.A.3

A dilation produces a similar figure

• True

• False

Tags

CCSS.8.G.A.3

An image is dilated at a scale factor of 1.5. This means the dilation is an enlargement and the dilated image will be bigger.

• True

• False

Tags

CCSS.8.G.A.3

Dilate Point B by a scale factor of 3:

• (12,0)
• (12,12)
• (4,3)
• (0,12)

Tags

CCSS.8.G.A.3

Does the image show a dilation?

• Yes
• No

Tags

CCSS.8.G.A.3

A dilation is which of the following:

• an enlargement

• a reduction

• Either an enlargement or a reduction

• Neither an enlargement or a reduction

Tags

CCSS.8.G.A.3