1. The first letter of your name
Can you fold the letter so that the top half covers the bottom half exactly?
If you can draw a line !

2. Symmetry

3. What is Symmetry?
If a shape can be folded in half so that one half fits exactly on top of the other, than we say that the shape has got line symmetry.
The fold is called a line of symmetry, it divides the shape into two equal parts!
The lines of symmetry may be vertical, horizontal or diagonal

4. 1 LoS One Line of Symmetry Vertical lines of symmetry
Horizontal lines of symmetry
Diagonal lines of symmetry

5.  Rectangle The Rectangle Problem
A rectangle has only 2 lines of symmetry and not 4 like the square 
To see this consider the following:
Mirror Line
Half a rectangle

6.  The Rectangle Problem
A rectangle has only 2 lines of symmetry and not 4 like the square 
To see this consider the following:
Half a rectangle
Mirror Line
A reflection in the diagonal would produce a kite!

7. Regular Regular Polygons Equilateral Triangle Square Regular Pentagon
Regular polygons have lines of symmetry equal to the number of sides/angles that they possess.
Regular
Regular Hexagon
Regular Octagon

8. Identify the Lines of Symmetry

9. Identify the Lines of Symmetry

10. Identify the Lines of Symmetry

11. Identify the Lines of Symmetry

12. Identify the Lines of Symmetry

13. Identify the Lines of Symmetry

14. Symmetry in Real Life God made many things in nature symmetrical!
Humans like to follow God’s footsteps when making objects because in this way things look nicer !

15. How many ? An object may have One line of Symmetry
Many lines of Symmetry
No lines of Symmetry
A circle ?
INFINITE LINES OF SYMMETRY !

16. How many lines of symmetry for each shape?4 3 5
Mix 1 5 8

17. How many lines of symmetry for each shape?
Mix 4 2 4 1 2 1

18. How many lines of symmetry for each shape?1 2 4
Mix 5 5 3

19. Yes or No?