


Description 



Axis of Symmetry: A line that a figure can be folded over so that onehalf of the figure matches the other half perfectly; a line about which a figure is symmetrical. 
Consider the square below:
Four different axes of symmetry (or lines of symmetry) are shown.
You can prove this by printing this page and cutting out the squares and folding
along the dotted lines.
JavaSketchPad pages are provided for you to explore symmetry
with quadrilaterals and pentagons. Move the red points until the original
figure and the reflection image are superimposed (i.e., when the figure and
image are on top of each other). Note that you may have to move the red points on the axis of symmetry, too. When you have accomplished this, the reflection
line is now the axis of symmetry, or line of symmetry, for the figure.


