Dilations Practice 2-5-20

A dilation with a scale factor greater than 1 is a(n) ________.

• Enlargement
• Reduction

Tags

CCSS.8.G.A.3

A dilation with a scale factor less than 1 but greater than 0 is a(n) _____.

• Enlargement
• Reduction

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4

If a triangle is dilated by a scale factor of 4, then the rule for the dilation would be _____.

• (x, y) → (x+4, y+4)
• (x, y) → (4x, 4y)
• (x, y) → (¼x, ¼y)
• (x, y) → (x-4, y-4)

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4

Is this an enlargement or a reduction?

• Enlargement

• Reduction

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4

Trapezoid A’B’C’D’ is the dilation of trapezoid ABCD.

Which algebraic representation shows this dilation?

• (x, y) --> (2x, 2y)

• (x, y) --> (0.5x, 0.5y)

• (2x, 2y) --> (x, y)

• (x, y) --> (3x, 2y)

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

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

(Think...did it get bigger or smaller? Can you eliminate based on that? )

• ½

• ¼

• 4

• 2

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4

Does the image show a Dilation?

• Yes
• No

Tags

CCSS.HSG.CO.A.2

Choose the correct scale factor:

• 2
• 3
• 1/3
• 1/2

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4

Dilations create figures that are___________.

• Congruent

• Similar

• Isometric

• Proportional