2. Definition of symmetry
A symmetry is a geometric transformation that
transforms the object in question keeping the same
shape and measures. Symmetries are particular
isometries.
3. Axial Simmetry
An object is axially symmetric if its appearance is
unchanged if rotated around an axis.
4. Origin Symmetry
Origin Symmetry is when every part has a matching
part that is the same distance from the central point but
in the opposite direction.
5. Rotational symmetry
When the figure is turned about a fixed point, it is
called rotation. This rotation can be: clockwise or
anticlockwise.