A new Type of Golden Quadrilateral

By Jim Fonseca

My previous post on Medium introduced a new type of Golden Triangle based on its three angles in the proportion of the Golden Ratio. In that post I explained the derivation of the Golden Ratio. For those who want a refresher, I have repeated that at the end of this post.

Figure 3, explained below

You can see the full research article and references posted on ResearchGate