6.11 DilationsClasswork Name: Date: Period:

Find the coordinates of the image and graph the image after a dilation with the given scale factor.

1. Scale factor: 4

Mapping: / Pre-image / Image
/ 2. Scale factor:

Mapping: / Pre-image / Image
3. Scale factor: 2

Mapping: / Pre-image / Image
/ 4. Scale factor:

Mapping: / Pre-image / Image

Find the scale factor for each situation below.

5. On the blueprints of Mr. Wong’s house, his great room measures 4.5 inches by 5 inches. The actual great room measures 18 feet by 20 feet. What is the scale factor of the dilation? / 6. A landscape designer has a drawing of a flower bed that measures 6 inches by 9 inches. The owner wants the actual flower bed to be 5 feet by 7.5 feet. What is the scale factor the designer must use to install the new flower bed?
7. A photographer uses dilation to create two smaller copies of the same photo. The photographer wants to print them on the same rectangular sheet of paper. The original photo is 4 inches wide and 6 inches high. Here are two ways he could print the photos.
  • What scale factor did the photographer use to reduce the photos in each of the different layouts?
  • What are the dimensions of the smaller photes in each of the different layouts.?
Layout 1: Layout 2:

Hint: The dimensions of the small photo is differerent in layout 1 and layout 2.

Transformation Mixed Practice Homework

1. Rotate the pre-image 90
Counter clockwise around the origin. / 2. Rotate the pre-image 90 around the origin.
/ 3. Rotate the image 180
Around the origin.
/ 4. Rotate the pre-image 90counterclockwise around vertex L.

5. Use the mapping
) to translate the pre-image.
/ 6. Identify the transformation below.
Give the transformation name and the details.
/ 7. Identify the transformation below. Give the transformation name and the details.
/ 8. Identify the translation below. Give the transformation name and the details.

9. Reflect the pre-image across the
/ 10. Reflect RST across the
/ 11. Dilate the pre-image using a scale factor of
/ 12. The figures below are similar figures. What scale factor was used to reduce the triangle?
Use the scale factor to find the length of the missing side.
13. Figure A is enlarged using a scale factor of . What is the length of the missing side?