A triangle containing a semicircle and an equilateral triangle. What fraction is golden?

Scroll down for a solution to this problem.

## Solution

The golden fraction is √6/12, which is approximately 20,4%.

## Poem

Pyramidion

A small pyramid

The capstone of an obelisk

Stone on stone

It reached it’s apex

A figure of beauty

Growing slowly slowly

To it’s acme

The highest point

To join

The son of Helios,

The sun deity

A point to reach in geometry

To built a polyhedron completely