Radial Symmetry

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					Radial Symmetry
Is there a way
to study math
 and art at the
  same time?




    Jasper Johns
  “Numbers in Color”
     1958-1959
How does this piece incorporate
       math and art?
• He used a pattern.
• Jasper Johns painted numbers.
There are other ways of using math
        and art together…

• Let’s talk about Symmetry!

• What is Symmetry?
             Symmetrical:
• When two halves of an object are mirror
  images of each other.
This flower is symmetrical.
It can be divided in half, and both
       sides are the same.




  • The red line is the line of symmetry.
  Lots of shapes are symmetrical…




Rectangle                 Trapezoid
                Circle




    Hexagon                Isosceles Triangle
   Can you identify the line of
symmetry in the following images?
 Some objects have more than one
       line of symmetry…




These flowers have rotational symmetry, too! This means,
that you can rotate them, and they will still look the same.
          Radial Symmetry
With rotational (or radial) symmetry, instead
 of an object being symmetrical over a line,
 it is symmetrical around a point.
You can turn the object and it looks the
 same.
 This star has radial symmetry.




• You can turn it, and it still looks the same!
   This piece of artwork has radial
             symmetry.




• You can turn it, and it still looks the same!
What else has radial symmetry?
• Pizza
• A stop sign shape (octagon)
• A Wheel
Today, we are going to make our
   own designs using radial
          symmetry!
Let’s get started!

				
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posted:9/16/2012
language:English
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