Symmetry
Lesson
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Symmetry is another geometric property that many objects in nature seem to have.

Line of symmetry is the place where the object can be folded to get equal parts. 

Leaves tend to have what is called
bilateral symmetry
. This means that there is a line
(either real or imaginary)
that divides the leaf into two parts,
which are mirror images of each other.

Animals of every shape and size can display bilateral, or mirror images of themselves.

 

Look at the butterfly below. The line of symmetry shows you where you can fold the butterfly in half to get 2 equal parts.
 

 


Symmetry is something that we find everywhere around us.
In  nature, one can see examples of symmetry in snowflakes, flowers, animals, fish, reptiles, faces, and reflections on water.

     Examples:

                   The stain glass is symmetrical.

 

                    Wallpaper border is symmetrical.

To determine whether or not something is symmetrical, fold it in half.
If each side has the same size, shape, and details, then it is symmetrical.
If each side of the figure does not have the same size, shape, and details,
then it is not symmetrical.

Click on the symmetrical pattern for practice.

  Remember: Symmetrical:  Same size, shape,    
                     and detail on both sides.

 

 
Topic Index | Grade 3 Math | Elementary Test Prep | StudyZone

Created by Carol Carroll
Updated by Pat Delia
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