Présentation de equilateral_01.jps

/syracuse/bbgraf/albums/geometrie_03/equilateral_01.jpg
-1.5 6.5 setxrange -1.5 4.5 setyrange /a 3 def /A {0 a} def /B {a a} def /C {a 0} def /D {0 0} def /I {C D 60 rotatepoint} def /J {C B 60 rotatepoint} def [A B C D I J] points [A B C D] polygone [D I C J B] ligne [ A B B C C D D A D I I C B J J C ] {1 marked} dapply bleu D A B angledroit setTimesItalic (A) A ultext (B) B urtext (C) C drtext (D) D dltext (I) I rtext (J) J rtext