mather nature
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Mather Nature
A Focus on Symmetry in Nature
Music: “Emptiness” by Blu May available under Creative Commons license.
The mathematical sciences particularly exhibit order, symmetry,
and limitation; and these are the greatest forms of the beautiful.
-Aristotle
Two Types of
Symmetry
Bilateral Symmetry
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Rotational Symmetry
Symmetry in which a shape can be folded along an imaginary line (axis of symmetry) so that
opposite sides of the shape match
Bilateral Symmetry
Also called reflectional symmetry
Bilateral Symmetry
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Bilateral Symmetry
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Symmetry in which a shape can be rotated around its center point so that it looks like its
original self
Rotational Symmetry
Also called radial symmetry
Rotational Symmetry
Image by Desirae Nelson available through Flikr under Creative Commons license..
Rotational Symmetry
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Review thetwo basic types of symmetry:
Bilateral Symmetry• Symmetry in which a shape
can be folded along an imaginary line (axis of symmetry) so that opposite sides of the shape match
• Also called reflectional symmetry
• Examples include insects, animals, reflections in ponds
Rotational Symmetry• Symmetry in which a shape
can be rotated around its center point so that it looks like its original self
• Also called radial symmetry• Examples include
snowflakes, flowers, starfish