hyperellipse | hypoellipse | Lamé curve | Lamé oval

abs(x/a)^r + abs(y/b)^r = 1

closed | oval | simple

A = (sqrt(π) a b 4^(1 - 1/r) Γ(1 + 1/r))/Γ(1/2 + 1/r)

(data not available)