%% auteur : 

%% auteur : MORA
-2 20 setxrange
-2 10 setyrange
20 setxunit
20 setyunit
.7 setlinewidth

/A{0 0} def
/B{9 0} def
/C{3 9} def
/M{1 3} def
/N{7 3} def
/U{10 0} def
/A'{C U translatepoint} def
A' point
/M'{M U translatepoint} def
/N'{N U translatepoint} def
gsave
rouge
/fillstyle {0.9 cyan fill} def
[A' M' N'] polygone*
[C A B] polygone*
grestore





[A B C] polygone
[A B C ] points
pointilles
[M N] ligne
setTimes
(C)  A [2 2] dltext
(B) B [2 2] drtext
(A) C [2 2] urtext
(N) M [2 2] ultext
(M) N [2 2] urtext
(A) A' [2 2] urtext
(N) M' [2 2] ultext
(M) N' [2 2] urtext
((MN)//(BC)) 6 -1 [2 2] dtext
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