The construction of Medieval European cathedrals was often based on geometries intended to make the viewer see the world through mathematics, and through this understanding, gain a better understanding of the divine.[13]
These churches frequently featured a Latin Cross floor-plan.[14]
Geometry of the Rose Window of Chartres
https://www.constructingtheuniverse.com/Chartres%20Window.html
New York Carver
http://www.newyorkcarver.com/geometry/geometry.htm
Equilateral Arch:
Trifoil
Ogee Arch: