A Fractal also known as the Torn Square Fractal. The base curves and motifs for the two fractals illustrated above are shown below.
See also Fractal, Koch Snowflake
References
Lauwerier, H. Fractals: Endlessly Repeated Geometric Figures. Princeton, NJ: Princeton
University Press, p. 43, 1991.
Pappas, T. The Joy of Mathematics. San Carlos, CA: Wide World Publ./Tetra, p. 79, 1989.
Weisstein, E. W. ``Fractals.'' Mathematica notebook Fractal.m.