Z1

Z2

Z3

Z4

Z5

Z6

Z7

Z8

Z9

a = 5 (slider from -5 to 5)
r = 5.2 (slider from -5 to 10)
A: (a, a)
B: ((-a), a)
carréABCD, f, g, h, i, C, D = Polygon(A, B, 4)
O: (0, 0)
c = Circle(O, r)
s(x) = (abs(x + a) - abs(x - a)) / 2
eq3: (s(x))^(2) + (s(y))^(2) = r^(2)
rac2: sqrt(2)
n = 1 (slider from -10 to 20)
eq1: (abs(s(x)))^(n) + (abs(s(y)))^(n) = r^(n)