symmetry: a visual presentation a powerpoint presentation created by mrs. gamache using the...
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![Page 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](https://reader037.vdocuments.net/reader037/viewer/2022103122/56649ced5503460f949b9be4/html5/thumbnails/1.jpg)
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
6Bhttp://www.adrianbruce.com
![Page 2: Symmetry: A Visual Presentation A PowerPoint Presentation created by Mrs. Gamache using the collection of web pages created by the Adrian Bruce and students](https://reader037.vdocuments.net/reader037/viewer/2022103122/56649ced5503460f949b9be4/html5/thumbnails/2.jpg)
Line Symmetry Shape has line symmetry when one
halfof it is the mirror image of the other half.
Symmetry exists all around us and many people see it as being a thing of beauty.
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Is a butterfly symmetrical?
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Line Symmetry exists in nature but you may not
have noticed.
![Page 5: Symmetry: A Visual Presentation A PowerPoint Presentation created by Mrs. Gamache using the collection of web pages created by the Adrian Bruce and students](https://reader037.vdocuments.net/reader037/viewer/2022103122/56649ced5503460f949b9be4/html5/thumbnails/5.jpg)
At the beach there are a variety of shells with
line symmetry.
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Under the sea there are also many symmetrical objects
such as these crabs
and this starfish.
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Animals that have Line Symmetry
Here are a few more great examples of mirror image in the animal kingdom.
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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.
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Human Symmetry
The 'Proportions of Man' is a famous work of art by Leonardo da Vinci
that shows the symmetry of the human form.
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REFLECTION IN WATER
If an object is reflected in water it
is considered to have line
symmetry along the waterline.
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The Taj Mahal
Symmetry exists in architecture all around the world. The best known example of this is the Taj Mahal.
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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).
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2D Shapes and Symmetry
After investigating the following shapes by cutting
and folding, we found:
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an equilateral triangle has 3 internal angles and 3 lines of symmetry.
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a square has 4 internal angles and 4
lines of symmetry.
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a regular pentagon has 5 internal angles and 5 lines of symmetry.
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a regular hexagon has 6 internal angles and 6 lines of symmetry .
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a regular octagon has 8 internal angles and 8 lines of symmetry.