1. Transformations
Math Alliance January 11, 2011

3. What is Congruency? Define it: Ideas? Alone As a group
A list of procedures and steps, or a lecture slide with media.

4. When are 2 Shapes or Figures Congruent?
We’ve put congruency into words; now how could you show congruency?
Develop a strategy with your table.
Ideas?
A list of procedures and steps, or a lecture slide with media.

5. Transformation Definition: Notation: Movement of points in the plane.
The image of point P under a transformation will be written P’
An opportunity for questions and discussions.

6. Isometry Definition: What types of isometry do you know?
Movements of points in the plane that preserve the distance between points: the distance between P and Q is equal to the distance between P’ and Q’.
What types of isometry do you know?
An opportunity for questions and discussions.

7. Isometry Definition: Types:
Movements of points in the plane that preserve the distance between points: the distance between P and Q is equal to the distance between P’ and Q’.
Types:
Reflection
Translation
Rotation
Glide reflection
An opportunity for questions and discussions.

8. Name the Transformation:B C
A = A’ D B’ D’ C’
Name the Transformation:
Reflection

9. Name the Transformation:D’
C = C’ B A’ A D B’
Name the Transformation:
Rotation

10. Name the Transformation:C’ B’ C B A’ D’ A D
Name the Transformation:
Translation

11. Name the Transformation:C B A D A’ D’ B’ C’
Name the Transformation:
Glide Reflection

12. Make a conjecture: What will happen if you transformB l A m n
Make a conjecture:
What will happen if you transform
ABC over n and then over m?

13. Make a conjecture: What will happen if you transformB l A m n
Make a conjecture:
What will happen if you transform
ABC over n and then over l?

14. Make a conjecture: What will happen if you reflectB l A n
Make a conjecture:
What will happen if you reflect
ABC over n and then over l?

15. Homework: Read Section 11.1
Section 11.1 #’s: 1-10, 23, 25, 30, 38a, 38h, 40b, and 46
An opportunity for questions and discussions.