A = (-0.8478747782728706, -2.130813163918637)
B = (2.673515531660394, -2.130813163918637)
F = (1.6498078045428386, -0.4030973515470966)
G = (1.5989763617744892, 0.1567928080933727)
H = (1.3542691057558187, 0.42661566387497896)
I = (1.244638749604217, 0.6686138034504315)
J = (0.8167340125288143, 0.6914863183258073)
E = (1.5992743691424476, -1.2063763345864684, 0)
C = (0.5910318289177727, -1.4377543252982825, 0.6926938739108266)
D = (1.1658970580108234, -1.4574118695711975, 0)
f = PolyLine(C, D, E, F, G, H, I, J)
a = Surface(f, 45, yAxis)