Flexible Transformations (Dilations) : The Big Picture

The Big Picture Mini-Project

Multiple Select

In your project, what must you label the point that is the center of dilation?

• C

• The origin

• The vertex

• The center of dilation

Multiple Choice

Where on your project must you put the scale factor (k) that you chose?

• In the space above your name

• In the 'Comments' section

• In the 'Description' box

• In the 'Title' box

Select "key" vertices (like the corners of the figure)

​ Label the coordinates of the Image

Label the coordinates of the corresponding pre-image

​Coordinate Points

Select "key" vertices (like the corners of the figure).

Measure from C to Image

Measure from C to Pre-image

Show measurement as ratio: Image over pre-image

​Rulers & Lines

Two ways to show measurements & computations

Some text here about the topic of discussion

Multiple Choice

Which of the following is one way to show how you determined the scale factor (k)?

• The length of a line in the image divided by the length of the corresponding line in the pre-image

• Multiplying the corresponding sides of the pre-image and image

• Dividing the corresponding sides of the pre-image and image

• Finding the ratio of the corresponding angles of the pre-image and image

Multiple Select

Which of the following is another way to show how you determined the scale factor (k)?

• With the center of dilation at the origin, compare the coordinates of a vertex point on the image to its corresponding point on the pre-image.

• Calculate the ratio of the lengths of two corresponding sides in the pre-image and image.

• Measure the length of the longest side of the pre-image and image, and divide the length of the image by the length of the pre-image.

• Subtract the coordinates of the pre-image from the coordinates of the image and divide the difference by the length of the pre-image.

Multiple Choice

Ideally, how many vertex points are accurately dilated? (you can have fewer but it will make it harder to get an accurate image)

• 4

• 8

• 12

• 16

• 20

Open Ended

What is the purpose of the My Check column?