Dilations Practice

Is this an enlargement or a reduction?

• Enlargement

• Reduction

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4

Enlargement or reduction?

• Enlargement

• Reduction

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4

Which of the following describes the image of a figure after a dilation that has a scale factor between zero and one?

• It has a different shape from the original figure and is smaller than the original figure.

• It has the same shape as the original and is smaller than the original figure.

• It has the same shape as the original and is larger than the original figure.

• It has the same shape and same size as the original figure.

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4

Which of the following describes the image of a square after a dilation that has a scale factor of 6?

• Its sides are 6 units longer than those of the original square.

• Its sides are 1/6 as long as those of the original square.

• Its sides are 6 times as long as those of the original square.

• Its sides are 6 units shorter than those of the original square.

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4

Which of the following describes the image of a triangle after a dilation that has a scale factor of 5/6 ?

• Each angle has 5/6 of the measure of its corresponding angle in the original triangle.

• Each angle has 65 of the measure of its corresponding angle in the original triangle.

• Each angle has the same measure as its corresponding angle in the original triangle.

• Each angle is 16 larger than the measure of its corresponding angle in the original triangle.

Tags

CCSS.8.G.A.1

CCSS.8.G.A.3

CCSS.8.G.A.4

Triangle PQR has coordinates P(2, 4), Q(-2, 4), R(0, -6). What are the coordinates of R' after the image has been dilated by a scale factor 1.5?

• R'(0, -9)

• R'(-9, 0)

• R'(3, 6)

• R'(-3, 6)

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4

How does the size of an image compare to the original figure when the original figure undergoes a dilation with a scale factor of one?

• The figure will be enlarged

• The figure will be compressed

• The figure will remain the same

• The figure will be reflected

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4

Triangle A’B’C’ is the dilation of triangle ABC.

Which algebraic representation shows this dilation?

• (x, y) --> (1/2x, 1/2y)

• (x, y) --> (2x, 2y)

• (x, y) --> (x + 1/2, y)

• (x, y) --> (1/2x, y)

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4

Quadrilateral WXYZ was dilated with the origin as the center to create quadrilateral W’X’Y’Z’.

Which rule best represents the dilation that was applied to quadrilateral WXYZ to create quadrilateral W’X’Y’Z’?

• (x, y) --> (0.4x, 0.4y)

• (x, y) --> (x + 3, y + 2)

• (x, y) --> (2.5x, 2.5y)

• (x, y) --> (x - 3, y - 2)

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4

What are the coordinates of after a dilation with a scale factor of 2/3

• P'(-2, 1), Q'(0, 2), R'(2, 2)

• P'(-4, 2), Q'(0, 4), R'(4, 4)

• P'(-4, 2), Q'(4, 0), R'(4, 2)

• P'(-12, 6), Q'(0, 12), R'(12, 12)

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4