3. Objectives: Find co-ordinates of points determined by geometric information. Understand and use the language and notation of reflections. Recognise transformation and symmetry of a 2-D shape: reflection in given mirror lines and line symmetry. Vocabulary:

4. 0 1 1 234567891011 2 3 4 5 6 7 8 9 10 11 x y

5. 0 1 1 234567891011 2 3 4 5 6 7 8 9 10 11 x y

6. 0 1 1 2345678910 11 2 3 4 5 6 7 8 9 10 11 y x Rhombus?

7. 0 1 1 234567891011 2 3 4 5 6 7 8 9 10 11 x y

8. 0 1 1 234567891011 2 3 4 5 6 7 8 9 10 11 x y

9. 0 1 1 234567891011 2 3 4 5 6 7 8 9 10 11 x y

10. 0 1 1 234567891011 2 3 4 5 6 7 8 9 10 11 x y

11. 0 1 1 234567891011 2 3 4 5 6 7 8 9 10 11 x y

12. Move one square only: horizontal line of symmetry

13. Move one square only: Vertical line of symmetry

14. Move one square only: diagonal, vertical and horizontal lines of symmetry

15. Move one square only: no lines of symmetry

16. Add two more squares to make the red line a line of symmetry:

18. A B C D E F Which triangles are reflections of triangle A?

19. A B C D E F B is a reflection of A

20. A B C D E F C is not a reflection of A It is a rotation of A

21. A B C D E F D is a reflection of A

22. A B C D E F E is not a reflection of A. It is a translation (slide).

23. A B C D E F F is a reflection of A

24. A B C D E F Are any of the other triangles reflections of each other? D is reflection of E ( or vice versa)

25. Thank you for your attention