[metapost] NAPOLEON
Dirk Laurie
dpl at sun.ac.za
Tue Dec 11 15:58:13 CET 2007
NAPOLEON is a Metapost package for making geometry sketches given
a typical mathematical description. For example, part of the
NAPOLEON code for the mathematical text
Circles $k_1$ and $k_2$ are drawn so that
$k_2$ passes through the centre of $k_1.$
The circles cut each other in points $A$ and $B.$
A third circle $k_3$ touches $k_1$ in $C$ and $k_2$ in $D$
so that $k_1$ and $k_2$ are inside $k_3.$
$AB$ is extended to meet $k_3$ in $E$ and $F.$
The lines $DE$ and $DF$ cut $k_2$ respectively in $G$ and $H.$
is
k3 = circumcircle (k1,k2,C);
A = cut(k2,k1); B = cut(k1,k2);
D = cut(k2,O2--O3);
E = cut(k3,A--B); F = cut(k3,B--A);
G = cut(k2,E--D); H = cut(k2,F--D);
To find out more, download the README, documentation and source
code from http://dip.sun.ac.za/~laurie/napoleon.
Dirk Laurie
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