1. Test: Thursday, October 22nd Bernhard – GT GEOMETRY
Transformations
Test: Thursday, October 22nd
Bernhard – GT GEOMETRY

2. TranSLATIONS Try This! Example:
Symbolically represent
Vector Representation
---How to name and Component
Form
Example:
For all transformations, be sure you know Prime Notation and Pre-image Vs. Image

3. Be able to identify a line of reflection!!
Try these! 1
REFLECTIONS 2
Be able to identify a line of reflection!!

4. Do you remember what a glide reflection is?
Lines of Symmetry
Sketch each picture. If not possible, say NOT POSSIBLE.
A capital letter that has a vertical line of symmetry
A hexagon with exactly 2 lines of symmetry
A triangle with exactly 2 lines of symmetry
Any figure with exactly 4 lines of symmetry
Do you remember what a glide reflection is?

5. What would the coordinates be for a 90 degree rotation?
Example:
What would the coordinates be for a 90 degree rotation?
ROTATIONS
Assume Counterclockwise (unless otherwise stated)
Be able to identify rotations and know coordinates!

6. Rotational symmetry AT, ST or NT: Regular polygons have rotational
A figure has rotational symmetry, but
does not have a line of symmetry.
3. A triangle has rotational symmetry.

7. CONGRUENCE TRANSFORMATIONS

8. Ex.
Ex.

9. I don’t have one of these on the test.
Find the coordinates of the image after each:
A dilation with k=3 about the point (1,2)
A dilation with k=-1/2 about the origin
3. Give the length of segment K’L’ for #1 and #2.
I don’t have one of these on the test.

10. Assume regular figures here!
GOOD LUCK STUDYING! 
Look over classwork and review problems! Now let’s try some Khan Academy practice!
Assume regular figures here!
Tesselations
Which polygons tessellate?
What figure would tessellate with octagons?