EJMT Abstract

In this article we focus on properties of equiangular spirals and their inversion in a circle. Our aim is to emphasize the use of polar coordinates and describe how to draw the inversion of equiangular spirals to get two-pole spirals. In particular, we provide a connection to the art of Escher through the use of GeoGebra software. This allows to create exploring activities that enrich the teaching process and expose both students and instructors to the beauty of mathematics.