symmetry a sketchbook of symmetry. symmetry a definition? symmetry operations –reflection...
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SYMMETRYA Sketchbook of Symmetry

SYMMETRYA Definition?Symmetry OPERATIONSReflectionRotationOthersSymmetry ElementsMirror (plane)Rotation axis

SYMMETRY ELEMENTS MIRRORSplanes (lines in 2d)cuts object in halfhalves are mirror images Shown as a dotted line

SYMMETRY ELEMENTS MIRRORSplanes (lines in 2d)cuts object in halfhalves are mirror images Shown as a dotted line

Questions to ask:Reflective symmetry?Where?Draw mirror(s).
Rotational Symmetry?Where is axis?What fold is axis?Draw axis.

LILY

HIBISCUS

PLUMERIA

Orchid

Tulip

SNOWFLAKESWilson Snowflake BentleyVermont farmerHis work is worldfamous.photographing individual snowflakes.First photographOver 5000 photographsNo two alikehttp://snowflakebentley.com/

SNOWFLAKES

2 More Examples of Snowflakes from Bentleys Photographs

From another source...
Another site:http://www.its.caltech.edu/~atomic/snowcrystals/

Growth of a snowflake(approx. time was 5 minutes)

Some Further Links to Explore:Symmetry of Border Patternshttp://www.math.okstate.edu/~wolfe/border/border.htmlSymmetry of Inorganic Moleculeshttp://neon.chem.ox.ac.uk/vrchemistry/sym/splash.html

Field Patternshttp://mathforum.org/geometry/rugs/symmetry/fp.html

END

Symmetry References
Symmetry of Inorganic MoleculesSnowflake BentleyGreat South CatalogOther Snowflakes
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