a

x

x

a²

A = (-4, 0)
B = (-2, 0)
Vieleck1, a, b, c, d, C, D = Polygon(A, B, 4.0)
E = (-4, 0)
H = Point(xAxis)
e = Segment(A, H)
F = Point(e)
Vieleck2, e_1, f, g, h, I, J = Polygon(E, F, 4.0)
G = Point(Vieleck1)
i = Segment(G, F)
K = Point(Vieleck1)
j = Segment(K, J)
k = Segment(A, F)
l: k - a
Text3: l + ""
Text4: l + ""
S: (a + l)^(2.0) - a^(2.0)
Text2: "a²+(" + S + ")"