Draw Islamic arches /kashani arch type 2

Ghiyath al-Din Kashani one of the best Muslim mathematicians he studied the geometry of pointed archs in the 15th century and produced methods for constructing archs.
Kashani produced principles to draw five type of arch .
in this video I will explain how to draw type 2 from these archs.

[@JahKubRu1]

dear geometry Guru! is it possible to contact with You and if yes how to do it?

[@EengineeringdrawingCad2]

Dear sir No possible to contact directly but if you have any question I can help you
This my Email
[e-mail]