https://www.reddit.com/r/geogebra/comments/1e8k2i8/is_it_possible_to_combine_shapes_to_make_one/

O = (0,0);[br]A = (x(O)-4, y(O));[br]B = (x(O)-3, y(O)+3);[br]C = (x(O)+3, y(O)+3);[br]D = (x(O)+4, y(O));[br]E = (x(O)+2, y(O));[br]F = (x(O)-2, y(O));[br]f = Segment(A, F);[br]g = Segment(E, D);[br]h = Segment(C, B);[br]c = Semicircle(A,B);[br]d = Semicircle(F,E);[br]e = Semicircle(C,D);[br]l1 = {f,g,h,c,d,e};[br]G = Point(l1);[br]H=G+(0,0);[br]loc1=Locus(H,G);