Only with a pencil, ruler and protractor, without the help of a computer, Venezuelan artist Rafael Araujo creates complex fields of three dimensional space where butterflies come to life and shells rise from mathematical spirals.

"CALCULATION" DRAWINGS BY RAFAEL ARAUJO: Using only a pencil, ruler and protractor, Venezuelan artist Rafael Araujo creates these beautiful renderings of the three dimensional space butterflies occupy and the mathematical spirals of sea shells.

"CALCULATION" DRAWINGS BY RAFAEL ARAUJO: Using only a pencil, ruler and protractor, Venezuelan artist Rafael Araujo creates these beautiful renderings of the three dimensional space butterflies occupy and the mathematical spirals of sea shells.