2. 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 !

3. Symmetry

4. What is Symmetry? If a shape can be folded in half so that one half fits exactly on top of the other, then 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

5. 1 LoS One Line of Symmetry Vertical lines of symmetry Horizontal lines of symmetry Diagonal lines of symmetry

6. Rectangle 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

7. 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!

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

9. Identify the Lines of Symmetry

12. 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 !

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

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

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

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

17. Tracing 1 Reflections object Mirror Line Reflect the object shape in the mirror line shown.

18. object Mirror Line Reflect the shape in the mirror line shown. Reflections Mark position of vertices, draw image of shape.

19. Mirror Line Reflections object image

20. Tracing 2 Reflections Mirror Line Reflect the object shape in the mirror line shown. object

21. Reflections Mirror Line Reflect the object shape in the mirror line shown. object Mark position of vertices and draw image of shape.

22. Reflections Mirror Line Reflect the object shape in the mirror line shown. object Mark position of vertices and draw image of shape. image

23. What letter would you get if you reflected each shape in its corresponding mirror line? STARTER

24. What letter would you get if you reflected each shape in its corresponding mirror line? STARTER

25. What letter would you get if you reflected each shape in its corresponding mirror line?

27. Homework ON SQUARED COPYBOOK Pg 190 Exercise 11a 7,8,9,11,12 (do not do 10)