Locating Pi on the Number Line Posted on August 10, 2012 by geogebraph Move slider t to the extreme right and observe what happens. This is a Java Applet created using GeoGebra from www.geogebra.org – it looks like you don’t have Java installed, please go to www.java.com The circumference of a circle with diameter 1 is approximately equal to 3.1416 or .