Quiz about Unit Two: Dilations

Question 1

What type of transformation enlarges or shrinks a shape?

Accepted Answer

dilation

Answer

translation

Answer

rotation

Answer

reflection

Question 2

A triangle is dilated by a scale factor of $$\frac{1}{5}$$ . What would the algebraic rule of this dilation look like?

Accepted Answer

$$\left(x,y\right)\rightarrow\ \left(\frac{1}{5}x,\ \frac{1}{5}y\right)$$

Answer

$$\left(x,y\right)\rightarrow\ \left(5x,\ 5y\right)$$

Answer

$$\left(x,y\right)\rightarrow\ \left(x,y\right)$$

Answer

$$\left(x,y\right)\rightarrow\ \left(0.5x,\ 0.5y\right)$$

Question 3

What do we multiple our coordinates by when a dilation is occurring?

Accepted Answer

scale factor

Answer

a whole number

Answer

a fraction

Answer

different numbers

Question 4

Triangle ABC was dilated using the origin as its center of dilation to create triangle A'B'C'. What is this dilation's scale factor?

Accepted Answer

$$2$$

Answer

$$\frac{1}{2}$$

Answer

$$\frac{1}{3}$$

Answer

$$3$$

Question 5

Square ABCD has side lengths that are 9 inches long. The square is dilated to create square A'B'C'D'. Square A'B'C'D' has side lengths that are 3 inches long. Which scale factor was used to dilate square ABCD?

Accepted Answer

1/3

Answer

3

Answer

4

Answer

1/5

Question 6

Which scale factor will produce an enlargement?

Accepted Answer

5

Answer

0.3

Answer

1/2

Answer

1

Question 7

Which scale factor will produce a reduction?

Accepted Answer

0.9

Answer

8

Answer

1

Answer

0

Question 8

Which dilation rule would be used to make a shape get larger?

Accepted Answer

$$\left(x,y\right)\rightarrow\ \left(8x,8y\right)$$

Answer

$$\left(x,y\right)\rightarrow\ \left(x+4,y+4\right)$$

Answer

$$\left(x.y\right)\rightarrow\ \left(0.9x,0.9y\right)$$

Answer

$$\left(x,y\right)\rightarrow\left(\frac{1}{2}x,\frac{1}{2}y\right)$$

Question 9

A figure is dilated using a scale factor greater than 1. What happens to this figure?

Accepted Answer

enlarges

Answer

preserves

Answer

reduces

Answer

disappears

Question 10

A scale factor between zero and one is used to dilate a figure. What happens to this figure's size?

Accepted Answer

reduces

Answer

enlarges

Answer

preserves

Answer

turns to zero

Unit Two: Dilations

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Mathematics