What type of stained glass window is shown below?

The stained glass window shown in the picture is a rose window.

Explanation:

The stained glass window shown in the picture is a rose window. The term rose window can be used to describe any circular window but it is most commonly used to define the typical circular windows of the Gothic architecture. Those Gothic rose windows were mainly used in churches, specially in French cathedrals. They are always divided into segments by stone mullions.

perimeter = 2l +2w, divide total perimeter by 2 for total length of 1 side and 1 width

172/2 = 86 (  total for 1 side and 1 width)

86-24 = 62 (since length is 24 ft longer subtract 24 then divide by 2 for width)

62/2 = 31

width = 31 feet

length = 31 +24 = 55 feet

check: 31*2 = 62, 55*2 = 110,  110+62 = 172

homophonic or a tonal