1. Warm up Write a description of the rule . (x, y) → (x +7, y – 4)
(a) translation 7 units to the right and 4 units up
(b) translation 7 units to the left and 4 units down
(c) translation 7 units to the right and 4 units down
translation 7 units to the left and 4 units up
2. Using the points T(0,3), U(2, 4) and V(5, -1) translate ΔTUV using the rule (x, y)  (x - 3, y - 1).

2. EOCT

3. QUIZ on MONDAY 2/3/2014

4. Reflection Correction
y = -x → (-y, -x)
A little more in depth:
Reflection over a line(ie x = or y =)
Example
y = -2; add or subtract the distance from the y = -2 line

5. A(-5, 2), B(1, 2), C(1, -1), and D(-5, -1) in the line y = -2

6. Let’s discover the rules using the manipulatives.
Rotations
Let’s discover the rules using the manipulatives.

7. Rotate 90 Clockwise about the Origin (Same as 270 Counterclockwise)
Change the sign of x and switch the order

8. Rotate 90° clockwise about the origin

9. Rotate 90° clockwise about the origin

10. Rotate 90 Counterclockwise about the Origin (Same as 270 Clockwise)
Change the sign of y and switch the order

11. Rotate 90° counterclockwise about the origin

12. Rotate 90° counterclockwise about the origin

13. Rotate 180 about the Origin
ONLY Change the signs

14. Rotate 180° about the origin

15. Rotate 180° about the origin

16. Rotate about a Point
1. Subtract the point of Rotation
2. Rotate as normal
3. Add the point of Rotation back in
Rotate A(-1, 2), B(-1, 5) and C(-3, 5) 90 Degrees Clockwise around the point (0,2)

17. Subtract point of rotation
PREIMAGE
Subtract point of rotation
-(0,2)
Rotate as Normal
90º CW
(y,-x)
Add point of rotation
+(0,2)
A(-1,2)
(-1,0)
(0,1)
(0,3)
B(-1,5)
(-1,3)
(3,1)
(3,3)
C(-3,5)
(-3,3)
(3,5)

18. Rotations Practice Worksheet
Classwork
Rotations Practice Worksheet