Présentation de calc_012.jps

/syracuse/bbgraf/albums/geometrie_2nd/calc_012.jpg
150 setwidth .9 dup scale /A {-4 -3} def /B {4 -3} def /C {-1 4} def /P {-2 -3} def /R {-5 A C xdpoint} def /Q {0 C B ydpoint} def [-2 0 2] {-3 point} apply [-3 -2] {A C xdpoint point} apply [-2 3 1 stepto] {C B ydpoint point} apply A B Q R interdroite /P defpoint [A B C R] points [Q R A] (-) ligne [A B C] polygone setTimesItalic (A) A cltext (B) B crtext (C) C uctext (P) P drtext (R) R cltext (Q) Q urtext