1. What is a glide reflection?
Warm Up
What is a glide reflection?

2. Announcements Quiz Friday No more retention quizzes
Retest needs to be done during tutorials by the end of the week.

3. Line of Symmetry
A figure has line symmetry or reflectional symmetry if there is a reflection for which the figure is its own image.
The line of reflection is called a line of symmetry and divides the figure in half.

4. Example: Reflectional Symmetry
How many lines of symmetry does the rectangle have?

5. Rotational Symmetry
A figure has rotational symmetry if there is a rotation of 180 degrees or less for which the figure is its own image.

6. Example: Rotational Symmetry
Does this figure have rotational symmetry?

7. Point Symmetry
A figure with 180 degree rotational symmetry also has point symmetry.

8. Example: Identify Symmetry
Do the figures have reflectional symmetry, rotational symmetry, neither or both?

9. Homework
Pg. 341 #2-17