1. Lesson 10-3 Pages 506-511 Transformations on the Coordinate Plane Lesson Check 10-2

2. What you will learn! How to draw translations, rotations, and reflections on a coordinate plane.

3. TransformationTranslation Reflection Line of symmetry Rotation

4. What you really need to know! A movement of a geometric figure is a transformation. There are three types of transformations.

5. Translation: you slide a figure from one position to another without turning it. Translations are also called slides.

6. Reflection: you flip a figure over a line. The figures are mirror images of each other. Reflections are also called flips.

7. Rotation: you turn the figure around a fixed point. Rotations are also called turns.

9. Example 1: The vertices of ∆ABC are A(-3,7), B(-1,0), and C(5,5). Graph the triangle and the image of ∆ABC after a translation 4 units right and 5 units down.

10. ∆ABC ∆A'B'C' A C B A C B

12. Example 2: The vertices of a figure are M(-8,6), N(5,9), O(2,1) and P(-10,3). Graph the figure and the image of the figure after a reflection over the y-axis.

13. MNOPM'N'O'P' M P N O N M O P

15. Example 3: A figure has vertices A(-4,5), B(-2,4), C(-1,2), D(-3,1), and E(-5,3). Graph the figure and the image of the figure after a rotation of 180°.

16. ABCDE A'B'C'D'E' A B C D E A B C D E

18. Page 509 Guided Practice #’s 3-6

20. Pages 506-509 with someone at home and study examples! Read:

21. Homework: Pages 510-511 #’s 7, 8, 11, 12, 15, 16, 17, 26, 27 #’s 28-40 Lesson Check 10-3

31. Page 748 Lesson 10-3 Lesson Check 10-3

35. M P N O M P N O