1. 9.1 Translations
Brett Solberg AHS ‘11-’12

2. Today’s Agenda Test Review Transformations Translations preimage image
isometry

3. Test Review 5th 6th Retake Options Average 36/47 = 77% High 50/47

4. Transformers
Identify the 4 transformers

5. Transformation
The transformation of a geometric figure is a change in its position, shape, or size.

6. Transformation The original figure is the preimage
The resulting figure is an image.
An isometry is a transformation where the preimage and image are congruent.
Preimage
Image

7. Isometry
Would the following transformations be considered an isometry?

8. Preimage/Image
List corresponding sides and angles.

9. Translation
An isometry which slides all points the same distance.

10. Composition
A combination of transformations.

11. Writing a Rule
A→B

12. Translation Perform a translation by (5,0) add 5 to each x coordinate
add 0 to each y coordinate

13. Translation
Translate by (2, -1)

14. Homework
9.1 Worksheet
pickup some graph paper