Golden Triangles and Pentagram

See an example of how Golden Ratio's work in pentagrams and triangles. Also note how golden triangles and pentagrams relate.

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

How do the golden triangles relate to golden pentagrams?

What other golden ratios are in these geometries that are clearly labeled?

Not much was mentioned about golden triangles on the website. What makes a triangle golden?

Hypothesize about how you would construct a golden triangle.

Anand Bernard, 2 December 2013, Created with GeoGebra