input geometriesyr16; figure(0,0,10u,7u); pair R,S,T,A,B,C; R=u*(0.75,0.75); S=u*(4.25,1); T=u*(2,4); trace triangle(R,S,T); label(btex $\cal F$ etex,iso(R,S,T)); marque_p:="croix"; A=u*(4,4); B=u*(7,6); C=u*(9,5); nomme.top(A); nomme.top(B); nomme.top(C); drawarrow A--B withpen pencircle scaled 1.5bp; drawarrow B--C withpen pencircle scaled 1.5bp; fin; figure(0,0,11u,7u); pair R,S,T,A,B,C; R=u*(0.75,0.75); S=u*(4.25,1); T=u*(2,4); trace triangle(R,S,T); label(btex $\cal F$ etex,iso(R,S,T)); marque_p:="croix"; A=u*(4,5); B=u*(10,5); C=u*(8,5); nomme.top(A); nomme.top(B); nomme.top(C); drawarrow A--B withpen pencircle scaled 1.5bp; drawarrow B--C withpen pencircle scaled 1.5bp; fin; figure(0,0,5u,5u); pair A,B,C,M; A=u*(0.75,0.75); B=u*(3.25,1.25); C=u*(2,3.25); M-C=B-A; trace A--B--M--C--cycle; marque_p:="non"; nomme.llft(A); nomme.lrt(B); nomme.top(M); nomme.ulft(C); fin; end