Dilations Practice

A dilation can only enlarge an image. True or False?

• True

• False

A dilation is a type of congruence transformation. True or False?

• True

• False

triangle has coordinates A(1, 2), B(6, -3) and C(0, 5). The triangle is dilated by a scale factor of 3. What are A', B' and C'?

• A'(1, 2), B'(6, -3) and C'(0, 5)

• A'(1, 3), B'(3, -3) and C'(3, 5)

• A'(3, 6), B'(18, -9) and C'(0, 15)

• A'(3, 6), B'(18, -9) and C'(3, 15)

Tags

CCSS.8.G.A.3

Point R(-3, 12) was dilated by a scale factor of 1/3. What is R'?

• R'(-3, 12)

• R'(-9, 36)

• R'(-1, 4)

• R'(1, 4)

Tags

CCSS.8.G.A.3

Point Z(5, -25) was dilated by a scale factor of 0.2. What is Z'?

• Z'(5, -5)

• Z'(5, 1)

• Z'(1, 5)

• Z'(1, -5)

Tags

CCSS.8.G.A.3

Point A(9, -2) is dilated to A'(27, -6). Describe the dilation in words.

• Dilated by a scale factor of 1/3.

• Dilated by a scale factor of 3.

• Dilated by a scale factor of 2.

• Dilated by a scale factor of 1/2.

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4

Point Q(-2, 1) is dilated to Q'(-14, 7). Describe the dilation using a coordinate rule.

• (-7x, 3y)

• (x - 12, y + 6)

• (3x, 9y)

• (7x, 7y)

Point A(10, 20) was dilated to become A'(5, 10). What was the scale factor of dilation?

• 1/2

• 2

• 4

• 0.25

• 1/4

Tags

CCSS.8.G.A.3

A triangle with coordinates A(2, 1.5), B(4, 1), and C(-2, -1) is dilated to produce A'(4, 3), B'(8, 2), and C'(-4, -2).

What is the scale factor of the dilation?

(Write your answer as JUST the number; example: 5).

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4

A triangle with coordinates E(9, 9), F(3, 2), G(12, 1) is dilated to produce E'(36, 36), F'(12, 8), G'(48, 4).

• Dilated by a scale factor of 1/3.

• Dilated by a scale factor of 2.

• Dilated by a scale factor of 4.

• Dilated by a scale factor of 1/4.