"ggg"+s

A = (-2, 2)
B = (2, 2)
C = Point(xAxis)
a = Segment(A, C)
b = Segment(B, C)
s: a + b
text1: "s = a + b  = " + s
L: (x(C), s)
E: (x(C), 0.0)
d = Segment(E, L)