Symmetry

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Symmetry

• By
• Krys Dalrymple
• Chantell Wagner
• Marie Nemes

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What is symmetry?

• Symmetry means balance or form. 
• In math we often talk about shapes and things
  being symmetrical.

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Types of Symmetry
Line Symmetry
Rotational Symmetry
A line drawn through the middle of a shape,
where both sides would look exactly the
same.
When a shape is rotated or turned it is still the
same shape.
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History of Symmetry

• Symmetry Started with the Egyptians
• - Known as the ancient math
  experts.
• -They covered their walls with tile to
  create designs with mirror images.

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Line Symmetry exists in nature but you may not
have noticed.
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
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this starfish!
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http//library.thinkquest.org/J002441F/symmetry.ht
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                            Go here Pattern
Blocks Make a pattern. Look at your pattern.
If you drew a line down the center, would both
sides look exactly the same?
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Literature Connections
Symmetry Patterns The Art of Making Beautiful
Designs From Lines, Alan Witshire, Tarquin
Publications 1991 Look At Both Sides, Elena
Martin, Capatone Press 2004 An Optical Artist
Exploring Patterns and Symmetry or Exploring
Symmetry Through Design, Greg Roza, PowerKids
Press 2005 Kaleidoscope Hubcaps and Mirrors
Symmetry and Transformations, Glenda Zappan,
Pearson Prentice Hall 2004 17 Symmetry Groups
Poster With Book, Dale Seymour Publications 2001