a ppt on symmetry by Radhika Khatter for more ppt's write to radhikaipis@yahoo.in

1. SYMMETRY
&
ROTATIONAL
SYMMETRY

2. By symmetry we mean…….
•A figure that can be folded into
half and each part looks exactly the
same , is said to be symmetrical.
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5
•The line that divides the image into two
parts is the known as line of symmetry.
•An object that is not symmetrical
is known as
asymmetrical.
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4
LINE OF
SYMMETRY
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3. To make it easy to explain….

4. Now it’s time to learn
ROTATIONAL
SYMMETRY

5. ROTATIONAL SYMMETRY
 If you can rotate a figure around a center point by
fewer than 360° and the figure appears unchanged, then
the figure has rotation symmetry.
 The point around which you rotate is called
the point of rotation.
The smallest angle you need to turn is called the
angle of rotation.

6. For better understanding we
have…………
IT’LL REMAIN
THE WHEN
ROTATED
THROUGH 90
DEGREE.

7. For better understanding we
have…………
NOT
SYMMETRICAL

8. For better understanding we
have…………
SYMMETRICAL

9. For better understanding we
have…………
NOT
SYMMETRICAL

10. For better understanding we
have…………
SYMMETRICAL

11. For better understanding we
have…………
NOT
SYMMETRICAL

12. For better understanding we
have…………
SYMMETRICAL

13. ONE MORE……
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4
5
1
3
5
4
2
2
4
5
3
2
3
1
4
5
1
4
2
3
3
5
1
2

14. Efforts put by – Radhika
Khatter
A member of a group of 5 children:
• Radhika
• Kashvi
• Ena
• Aditi
• Prathyusha