A = (-2, 0)
B = (2, 8)
C = (6, 0)
t1, c, a, b = Polygon(A, B, C)
i = OrthogonalLine(B, b)
D = Intersect(i, b)
f = Segment(B, D)
надпись1: "SΔ=1/2AC×BD=AD*BD= " + (C / 2) + "×" + f + " =" + ((C / 2 * f)) + " см²"