%% syntaxe : A B C bissectrice --> B E ou E est un point de la bissectrice
/bissectrice {
10 dict begin
/yC exch def
/xC exch def
/yB exch def
/xB exch def
/yA exch def
/xA exch def
/A {xA yA} def
/B {xB yB} def
/C {xC yC} def
/alpha {A B C tripointangle} def
B
A B alpha rotatepoint
A milieu
end
} def
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