1. Symmetry Line Symmetry Rotational (Order) Symmetry
Creating Rotational Symmetry

2. Starter Questions www.mathsrevision.com Q1. Calculate
Q2. If 1 bar of chocolate costs 65p. How much will
1000 bars cost. Give your answer in £’s.
Q3. Round to 1 decimal place
Q4. Covert to 24 hrs clock

3. Line Symmetry www.mathsrevision.com Learning Intention
Success Criteria
To revise line symmetry.
Understand the term line symmetry.
Complete Drawings given the line of symmetry.

4. Line Symmetry www.mathsrevision.com
A line symmetry occurs in a shape if, when the shape is folded over the line the two pieces either side of the line, are exactly the same.

5. Line Symmetry The Square

6. Line Symmetry The rectangle

7. Line Symmetry The Kite S4

8. Line Symmetry The Rhombus

9. Line Symmetry The Parallelogram
No lines of symmetry !

10. Line Symmetry The Equilateral Triangle

11. Line Symmetry The Trapezium 1

12. Line Symmetry The Trapezium 2
No lines of symmetry !

13. Line Symmetry The Hexagonal

14. Line Symmetry www.mathsrevision.com
Example : Complete the rest of the shape given the line of symmetry.

15. Created by Mr. Lafferty Maths Dept.
Line Symmetry S4
Now try MIA Ex1
Ch3 (page 33)
19-Apr-17
Created by Mr. Lafferty Maths Dept.

16. Starter Questions www.mathsrevision.com
Q1. Round the following to the first decimal place.
(a) (b)
Q2. What fraction is the green area.
What fraction is the grey area.
Q3. A pencil costs 22p. How much does
a 1000 cost. Put your answer in £’s.

17. Rotational Symmetry www.mathsrevision.com Learning Intention
Success Criteria
To explain rotational symmetry for a shape.
Understand the terms rotational symmetry.

18. Rotational Symmetry www.mathsrevision.com
1. Draw this shape into your jotter.
2. Use the tracing paper to make a copy of this shape.
3. Turn the tracing paper through 180 degrees about the dot.
This new shape has HALF - TURN symmetry
This dot is called the centre of symmetry

19. Rotation Symmetry Half Turn
All these shapes have order 2

20. Rotation Symmetry Order
The order of symmetry is the number of times a shape
looks the same in one complete turn.
Has order 2
Has order 3
Has order 4

21. Created by Mr. Lafferty Maths Dept.
Rotational Symmetry S4
Now try MIA Ex2
Ch3 (page 36)
19-Apr-17
Created by Mr. Lafferty Maths Dept.

22. Starter Questions www.mathsrevision.com Q1. Calculate
Q2. What is the time difference between
8.15am and 1:00pm
P=20cm
Q3.
A=25cm2
5cm
Q4. Find the perimeter and area of the square.
Q5. Find the order of rotational symmetry
for the shape opposite. 5 6 1 4 3 2

23. Creating Half-Turn Symmetry
Learning Intention
Success Criteria
To explain how we can
create half-turn symmetry for a shape.
Understand the terms half-turn symmetry.
Draw the other half of a shape such that it has half-turn symmetry.

24. Creating Half-Turn Symmetry
Task 1
Draw the complete shape you get
after it has been rotated
through 180 degrees about the point.
Task 2
Do the same for this shape

25. Creating Half-Turn Symmetry
Task 3
Do the same for this shape
If you find it difficult to work out the new shape
1. Try tracing the shape first
2. Then rotate tracing paper 180 deg about the point.

26. Creating Half-Turn Symmetry
Now try MIA Ex3
Ch3 (page 38)
19-Apr-17
Created by Mr. Lafferty Maths Dept.