symmetry is a key element of nature itself, and more importantly to us, in human, and God's creations. in math, symmetry brings out simplicity amongst complex shapes, and makes things easier to understand. symmetry is everywhere. it is there when you look at a perfect square, or a bar of chocolate, when you push all your chairs in at your dinner table, or when you look at a racing car. you see it in your architecture, in domes, in arches, in staircases and in doors. you see it in your computers and cellular phones. it is possible that it also makes things more beautiful to behold, and is hard to ignore once you start looking around...
pls note that these notes are copied from my math teacher's notes i do not claim them as my own!
2 lines of symmetry
A nephroid has 2 lines of symmetry.
A parallelagram can be a square, which has four lines of symmetry or a rectangle which has two lines of symmetry but the generic parallelagram has zero lines of symmetry
A decagon need not have any lines of symmetry. It can also have 1 or 10 lines of symmetry.
5 lines
2 lines of symmetry
A nephroid has 2 lines of symmetry.
it has five lines of symmetry
Equilateral Triangles (3 lines of symmetry)Rectangles (at least 2 lines of symmetry)Squares (4 lines of symmetry)Rhombuses (at least 2 lines of symmetry)Any regular polygon (at least 5 lines of symmetry)
it has no lines of symmetry
A parallelagram can be a square, which has four lines of symmetry or a rectangle which has two lines of symmetry but the generic parallelagram has zero lines of symmetry
There is no such thing as 8 lines of symmetry. A circle, for example, has infinitely many lines of symmetry.
A decagon need not have any lines of symmetry. It can also have 1 or 10 lines of symmetry.
5 lines
Lines of symmetry are 2 dimensional. Planes of symmetry are 3D.
2 lines OF SYMMETRY
10 lines of symmetry