1. 11.2 translations
Essential Question: What does it mean to translate a shape?

2. Transformation
changes into another figure (position or orientation)
Preimage: Original figure
Image: The resulting figure
(Notated as A’ is read “A prime” to represent the new point on the image that corresponds to point A of the original figure)

3. Video: How do animators use math?

4. Types of Transformations
Translation = slide
Translation
The figure slides along a straight line without turning.
(horizontal, vertical, or diagonal) Each points move same distance and direction

5. Example 1:

6. On Your Own:

8. Demonstration
Graph to translate quadrilateral ABCD 5 units left and 3 units down. x y
Start at Blue Figure:
Each vertex is moved five units left and three units down. B A 4 D’ C’ B’ A’ 2 C –4 –2 D 2 4 –2
Do as demonstration – next example they will do on paper –4

9. Example 2:

10. They have to be able to show this this type of table when determining coordinates of image.  There is a question on the test in which they do not get a coordinate plane...only coordinate. They need to practice this on the next slide

11. Example 3:

12. On Your Own:

13. On Your Own: A triangle has vertices X(5, 4), Y(-6, 1), and Z(0, 9).
After a transformation, the coordinates of the image are
X (1,9), Y (-10,6), and Z (-4,14). Describe the transformation.
_____________________________________
(x-4,y+5)
On homework

14. Summary: Review your notes
Summary: Review your notes. Describe, in your own words, what you learned. Discuss what you learned with your shoulder partner. Summary: