1. Students will be able to define and apply translations.
Lesson 2.2 Translations
Students will be able to define and apply translations.

2. YouTube: Intro to Transformations

3. Transformation – a change in the ___________, _________ , or _________ of a figure.
Rigid Transformation – a change in the position of a figure that does not change its _______________ or ________________.
Preimage – the __________ figure in a transformation.
Image – the _____________ figure in a transformation.
Isometry – a transformation in which the original figure and its image are ___________.
Prime – a notation to identify new images being created. It looks like this: A’ or A’’ or A’’’ or A’’’’
size
shape
position
size
shape
original
resulting
congruent

4. Translation is a rigid transformation
Translation is a rigid transformation. The new image will be congruent (isometry) to the Pre-image.
The new Image will have the same angles, shape, and size like the Pre-Image.

6. DAY B

7. Transformations Example: (x, y) ↦ (x+3, y)  RULE (5, 12) ↦ (5+3, 12)
A transformation transforms, or maps, the original point to another point. Transformation uses a combination of operations (+, −, ÷, x)
notation: ↦ “maps to” (it is a rule “arrow notation”)
Example: (x, y) ↦ (x+3, y)  RULE
(5, 12) ↦ (5+3, 12)
( 8, 12) new point

8. Transformation
Translation (slide), Reflection (mirror), Rotation (turn) maintain the congruency of the shapes.
Dilation (enlarge/reduce) does not maintain the congruency of the shapes.