.geometry "version 0.50";
.text("Show that J, K, L, and M lie on a circle");
v1 = .free(-0.44012, 0.113772, "A");
v2 = .free(-0.416168, 0.389222, "B");
v3 = .free(0.431138, -0.0778443, "C");
v4 = .free(0.452096, 0.586826, "D");
c1 = .c.vv(v1, v2);
c2 = .c.vv(v3, v4);
v5 = .v.cc(c1, c2, 2, "E");
l1 = .l.vc(v5, c2, 2, .longline);
l2 = .l.vc(v5, c1, 2, .longline);
l5 = .l.vlpar(v1, l1, .longline);
l6 = .l.vlpar(v3, l2, .longline);
v10 = .v.lc(l5, c1, 1, .cyan, "J");
v11 = .v.lc(l5, c1, 2, .cyan, "K");
v12 = .v.lc(l6, c2, 2, .cyan, "L");
v13 = .v.lc(l6, c2, 1, .cyan, "M");