Monster Tessellation (1) : Monster and Skull (with Hat)

400x400 pixels (GIF animation) 

400x400 pixels (GIF animation) 

1024x1024 pixels (Click on the image for a larger view.)
This picture is derived from the tenth picture
in this page: Tessellation using Inequalities (1)

( Softwares used: gnuplot --> GIMP --> PhotoScape )