01/29 Similarity Transformations Graded

What is the scale factor of this dilation from B to A?

(a)  

Are the following similar? Why or why not?

• Yes, they are both trapezoids

• No, they have different sizes

• No, the ratios of the corresponding sides are not equal.

• Yes, they have the same base and 4 angles

Square A is a Dilation of Square B. What is the scale factor of the squares from A to B?

• 1/7
• 4/5
• 5/4
• 7

Jordan is putting a photo of the lacrosse team in a full-page layout in the yearbook. The original photo is 4 inches by 6 inches. If the photo in the yearbook is 6 inches by 9 inches, what is the scale factor of the dilation?

• k = 1/2

• k = 5

• k = 3/2

• k = 9

5.) What is the scale factor of the dilation from A to B ?

• 1/4

• 1/2

• 1

• 2

3.) Is the dilation from A to B an enlargement or a reduction?

• enlargement

• reduction

2.) Is the dilation from A to B an enlargement or a reduction?

• enlargement

• reduction

1.) Is the dilation from A to B an enlargement or a reduction?

• enlargement

• reduction

Challenge problem

What is the scale factor of the dilation shown ?

• 2/5

• 3/4

• 5/12

• 3

Which of the following is the definition of a DILATION?

•  A transformation that can change the size of a polygon but leaves the shape unchanged.
•  A change in the shape of a polygon but leaves the size unchanged.
• A transformation that changess the size of a shape.