The document defines symmetry as when a figure can be folded along a line and the two halves match exactly. It provides examples of symmetrical and non-symmetrical shapes. It also explains that to find the lines of symmetry, you draw lines where the shape can be folded and the halves match. The document shows a shape with 4 lines of symmetry.

1. 10-11 Using Symmetry
Math Notes
Measurement and Geometry 3.4

2. Symmetry

3. Symmetry

4. Symmetry
A figure is symmetrical if you can draw a line,
fold it along that line and match exactly.

5. Symmetry
A figure is symmetrical if you can draw a line,
fold it along that line and match exactly.

6. Symmetry
A figure is symmetrical if you can draw a line,
fold it along that line and match exactly.
Symmetrical

7. Symmetry
A figure is symmetrical if you can draw a line,
fold it along that line and match exactly.

8. Symmetry
A figure is symmetrical if you can draw a line,
fold it along that line and match exactly.

9. Symmetry
A figure is symmetrical if you can draw a line,
fold it along that line and match exactly.
Also
Symmetrical

10. Symmetry
A figure is symmetrical if you can draw a line,
fold it along that line and match exactly.

11. Symmetry
A figure is symmetrical if you can draw a line,
fold it along that line and match exactly.

12. Symmetry
A figure is symmetrical if you can draw a line,
fold it along that line and match exactly.
NOT
Symmetrical

13. Symmetry
A figure is symmetrical if you can draw a line,
fold it along that line and match exactly.

14. Finding Symmetry

15. Finding Symmetry

16. Finding Symmetry

17. Finding Symmetry
Symmetrical

18. Finding Symmetry

19. Finding Symmetry

20. Finding Symmetry
NOT
Symmetrical

21. Finding Symmetry

22. Finding Symmetry

23. Finding Symmetry

24. Finding Symmetry

25. Finding Symmetry
Symmetrical

26. Finding Symmetry

27. Finding Symmetry

28. Finding Symmetry
NOT
Symmetrical

29. Finding Symmetry

30. Finding Symmetry

31. Finding Symmetry

32. Finding Symmetry
1.

33. Finding Symmetry
1.
2.

34. Finding Symmetry
1.
3.
2.

35. Finding Symmetry
1.
3.
2.
4.

36. Finding Symmetry
1.
3.
2.
4 Lines of
4.
Symmetry

37. Finding Symmetry

38. Finding Symmetry

39. Finding Symmetry

40. Finding Symmetry
Symmetrical

41. Finding Symmetry