1. Reflections
Teacher Twins©2014

2. Warm Up A (-2, 5) B (3, -7) C (0, 8) D (-5, -2) E (2, 3) F (-3, 0)
Graph and label each ordered pair.
A (-2, 5)
B (3, -7)
C (0, 8)
D (-5, -2)
E (2, 3)
F (-3, 0)

3. Warm Up Answers

4. Reflections

5. A reflection is a transformation that produces a mirror image when a shape is reflected across a line.

6. Triangle ABC is reflected across the y axis.
Notice the points are equidistant from the y axis.
The new shape has the letter and the apostrophe .

7. A (- 7, 6) A’ (7, 6) B (- 3, 6) B’ (3, 6) C (- 4, 2) C’ (4, 2)
Notice the x value becomes the opposite and the y value stays the same.
Reflection across the y axis rule:
(x , y) (- x, y)

8. Triangle ABC is reflected across the x axis.
Notice the points are equidistant from the x axis.
The new shape has the letter and the apostrophe .

9. A (- 7, 6) A’ (-7, -6) B (- 3, 6) B’ (-3, -6) C (- 4, 2) C’ (-4, -2)
Notice the y value becomes the opposite and the x value stays the same.
Reflection across the x axis rule:
(x , y) (x, - y)

10. Practice
Triangle ABC
A(0,7), B(-2, 5), C(4, -3)
Reflect triangle ABC across the y axis.
Reflect triangle ABC across the x axis.

11. Closure
Write the ordered pairs for A(2,6), B(-7,0), and C(3,-2) if the points are reflected across the x axis.