Pentagram - various appearances of the golden ratio
Pentagram and biblical units
The applet enables to check that the ratio between various neighboring segments on the sides and diagonals are equal to Phi (the golden ratio).
This provides a verification that the biblical length units(cubit, foot, etc.) are proportional also to subsequent segments in the picture. The topic is described in the following paper:
Thierry Dana-Picard - Sara Hershkovitz - Zsolt Lavicza - Kristof Fenyvesi
One Mathematical topic and several levels of implementation
Golden section’s viewing the sounds
(Preprint 2019).