Here my dog “Flame” has her face made perfectly symmetrical with a bitof photo magic.
The white line down the center is theLine of Symmetry
When the folded part sits perfectly on top (all edges matching), then the fold line is a Line of Symmetry.
Here I have folded a rectangle one way, and it didn”t work.
So this is not a Line of Symmetry
But when I try it this way, it does work (the folded part sits perfectly on top, all edges matching):
So this is a Line of Symmetry
A Triangle can have 3, or 1 or no lines of symmetry:
|Equilateral Triangle(all sides equal, all angles equal)||Isosceles Triangle(two sides equal, two angles equal)||Scalene Triangle(no sides equal, no angles equal)|
|3 Lines of Symmetry||1 Line of Symmetry||No Lines of Symmetry|
Different types of Quadrilaterals (a 4-sided plane shape):
|Square(all sides equal, all angles 90°)||Rectangle(opposite sides equal, all angles 90°)||Irregular Quadrilateral|
|4 Lines of Symmetry||2 Lines of Symmetry||No Lines of Symmetry|
|Kite||Rhombus(all sides equal length)|
|1 Line of Symmetry||2 Lines of Symmetry|
A regular polygon has all sides equal, and all angles equal:
|An Equilateral Triangle (3 sides) has 3 Lines 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 Lines of Symmetry|
|A Regular Heptagon (7 sides) has 7 Lines of Symmetry|
|A Regular Octagon (8 sides) has 8 Lines of Symmetry|
And the pattern continues:
A regular polygon of 9 sides has 9 Lines of SymmetryA regular polygon of 10 sides has 10 Lines of Symmetry…A regular polygon of “n” sides has “n” Lines of Symmetry