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# Plane figure equations

**F. Poyo**

**June 23, 1996**

### Abstract:

We know what the equation of a circle is like in two
dimensional space (x,y). It is

How can you obtain the equations of triangle or square then?
The purpose of the present text is to show
the equations of plane figures.
I will present some examples.

** Next:** Examples of Square and
**Up:** Mathemusement
*yoshi.tamori@gmail.com*