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- 1. Symmetry: A Visual Presentation A PowerPoint Presentation created by Mrs. Gamache using the collection of web pages created by the Adrian Bruce and students of 6B http://www.adrianbruce.com
- 2. Line Symmetry <ul><li>Shape has line symmetry when one half of it is the mirror image of the other half. </li></ul><ul><li>Symmetry exists all around us and many people see it as being a thing of beauty. </li></ul>
- 3. Is a butterfly symmetrical?
- 4. Line Symmetry exists in nature but you may not have noticed.
- 5. At the beach there are a variety of shells with line symmetry.
- 6. Under the sea there are also many symmetrical objects such as these crabs and this starfish.
- 7. Animals that have Line Symmetry Here are a few more great examples of mirror image in the animal kingdom.
- 8. THESE MASKS HAVE SYMMETRY These masks have a line of symmetry from the forehead to the chin. The human face also has a line of symmetry in the same place.
- 9. Human Symmetry The 'Proportions of Man' is a famous work of art by Leonardo da Vinci that shows the symmetry of the human form.
- 10. REFLECTION IN WATER If an object is reflected in water it is considered to have line symmetry along the waterline.
- 11. The Taj Mahal Symmetry exists in architecture all around the world. The best known example of this is the Taj Mahal.
- 12. This photograph shows 2 lines of symmetry. One vertical, the other along the waterline. (Notice how the prayer towers, called minarets, are reflected in the water and side to side).
- 13. 2D Shapes and Symmetry After investigating the following shapes by cutting and folding, we found:
- 14. an equilateral triangle has 3 internal angles and 3 lines of symmetry.
- 15. a square has 4 internal angles and 4 lines of symmetry.
- 16. a regular pentagon has 5 internal angles and 5 lines of symmetry.
- 17. a regular hexagon has 6 internal angles and 6 lines of symmetry .
- 18. a regular octagon has 8 internal angles and 8 lines of symmetry.

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