Benchmark Review: Dilation and Similar Figures

A dilation is which of the following: 

• only an enlargement
• only a reduction
• Either an enlargement or a reduction
• Neither an enlargement or a reduction

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

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

• True

• False

A dilation produces a similar figure.

• True

• False

How do you write the algebraic representation when the scale factor is 4?

• (x,y) --> (1/4 x, 1/4 y)

• (x,y) --> (x + 4, y+4)

• (x,y) --> (-4 x, -4 y)

• (x,y) --> (4 x, 4 y)

Which of the following is the algebraic representation for a dilation?

• (x,y) --> ( x, 3y)

• (x,y) --> ( 2x, 3y)

• (x,y) --> ( x, y-3)

• (x,y) --> ( 2x, 2y)

How do you write the algebraic representation when the scale factor is 1/4?

• (x,y) --> ( x + 1/4, y + 1/4)

• (x,y) --> ( 1.4 x, 1.4 y)

• (x,y) --> (1/4 x, 1/4 y)

• (x,y) --> (4 x, 4 y)

Which of the following transformations does NOT preserve congruence?

• translation

• reflection

• dilation

• rotation

Which mathematical operation is used with scale factor?

• addition

• subtraction

• multiplication

• division

Which of the following is NOT true about similar figures?

• corresponding sides are proportional

• same shape, same size

• corresponding angles are congruent

• same shape, different size