What Does Symmetry Mean?

Mathematically, symmetry describes the nature or attribute of a shape being the exact reflection or form on opposite sides of a dividing line. Subtopics include; line and rotational symmetry. Facial symmetry is sometimes used as a measure of the attractiveness of a person.
sym·me·try
[sim-i-tree]
NOUN [PLURAL SYM·ME·TRIES.]
1.
the correspondence in size, form, and arrangement of parts on opposite sides of a plane, line, or point; regularity of form or arrangement in terms of like, reciprocal, or corresponding parts.
2.
the proper or due proportion of the parts of a body or whole to one another with regard to size and form; excellence of proportion.
3.
beauty based on or characterized by such excellence of proportion.
4.
Physics. a property of a physical system that is unaffected by certain mathematical transformations as, for example, the work done by gravity on an object, which is not affected by any change in the position from which the potential energy of the object is measured.
Source: Dictionary.com
In mathematics, symmetry means that both sides of something are exactly equal. For example, a square is symmetrical because if you fold it in half both sides are exactly equal.
Q&A Related to "What Does Symmetry Mean"
 When dealing with symmetry you will need to know that it is an attribute of shpes or relation. Symmetry exact reflection of form on opposite sides of a dividing line. http://answers.ask.com/Science/Mathematics/what_is...
 1. Explain to the children that the concept of symmetry means "same on both sides. Show them examples of things that are and are not symmetrical. 2. Give the students this butterfly http://www.ehow.com/how_4623930_teach-children-sym...
 Symmetry is the. exact correspondence of form and constituent configuration on opposite sides of a dividing line or plane or about a center or an axis. http://wiki.answers.com/Q/What_is_symmetry
 1 Use mirrors and blocks/ plastic shape tiles. Mirrors are good for symmetry because they create an exact replica of what is reflected. Ad http://www.wikihow.com/Teach-Children-Symmetry
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The word symmetry means that something is divided equally. Half of a circle, for instance, is symmetrical to its other half because they are identical to one another ...
Symmetry basically means equality in a mathematically correct way. A triangle is symmetric because it can be folded in half and both sides will be exactly equal. ...
In my experience symmetry means the same or equal to. Speaking about geometry it means that you can split a shape and both sides are exactly the same. For example ...