Properties of 2 Dimensional Shapes

 

Maths Games

 

 

 

 

There's No Place Like Home
2D Shapes and Line Symmetry

After doing an elementary geometry investigating by making, cutting and folding these regular 2D shapes, I found:
shape shape


2d shape - triangle

an equilateral triangle has 3 internal angles and 3 lines of symmetry. 


2d shape - Square
a square has 4 internal angles and 4 lines of symmetry.

2d shape - Regular Pentagon

a regular pentagon has 5 internal angles
and 5 lines of symmetry.


2d shape -  Regular Hexagon
a regular hexagon has 6 internal angles
and 6 lines of symmetry.

2d shape -  Regular Octagon
a regular octagon has 8 internal angles
and 8 lines of symmetry.

Is there a pattern here? What is it?

Mind you... maybe I've got this completly wrong. Perhaps
you should fold the shapes for yourself to check the validity
of my findings.


shape shape
There's No Place Like Home!


Line Symmetry Line Symmetry

Line Symmetry Line Symmetry

Bring on the Rotational Symmetry