input geometriesyr16; u:=7mm; figure(0,0,8u,8u); pair A,B,C,D,E,F,G,H; A=u*(3,5); B-A=u*(2.5,0); C=rotation(A,B,90); D=rotation(B,A,-90); E=rotation(B,A,60); F=rotation(C,B,60); G=rotation(D,C,60); H=rotation(A,D,60); trace polygone(A,B,C,D); trace polygone(E,B,F,C,G,D,H,A); trace marqueangle(F,B,E,0); label.urt(btex $\alpha$ etex,w); fin; end