Here mine dog "Flame" has her confront made perfectly symmetrical through a bitof picture magic.

The white line down the center is theline of Symmetry

When the folded component sits perfect on top (all edges matching), then the fold line is a heat of Symmetry.

Here I have actually folded a rectangle one way, and it didn"t work. So this is not a line of Symmetry

But as soon as I shot it this way, that does work (the folded component sits perfect on top, every edges matching): So this is a line of Symmetry

## Triangles

A Triangle can have 3, or 1 or no lines of symmetry:  Equilateral Triangle(all political parties equal, all angle equal) Isosceles Triangle(two political parties equal, 2 angles equal) Scalene Triangle(no sides equal, no angles equal) 3 currently of Symmetry 1 heat of Symmetry No lines of Symmetry

Different varieties of square (a 4-sided airplane shape):  Square(all political parties equal, all angles 90°) Rectangle(opposite sides equal, all angle 90°) Irregular Quadrilateral 4 currently of Symmetry 2 lines of Symmetry No present of Symmetry  Kite Rhombus(all sides equal length) 1 line of Symmetry 2 currently of Symmetry

## Regular Polygons

A consistent polygon has actually all political parties equal, and also all angle equal:

 An Equilateral Triangle (3 sides) has 3 present of Symmetry A Square (4 sides) has 4 lines of Symmetry A Regular Pentagon (5 sides) has 5 lines of Symmetry A Regular Hexagon (6 sides) has 6 present of Symmetry A Regular Heptagon (7 sides) has 7 present of Symmetry A Regular Octagon (8 sides) has 8 lines of Symmetry

And the sample continues:

A regular polygon the 9 sides has 9 lines of SymmetryA constant polygon the 10 sides has 10 currently of Symmetry...A continuous polygon that "n" sides has "n" currently of Symmetry