in order to find the shorter side of a golden rectangle we need to divide 13
by 1.6180.
A golden rectangle is a rectangle in geometry whose side lengths are in the golden ratio, or display style 1:tfrac 1+sqrt 5 2 which is display style 1:varphi 1:varphi (the Greek letter phi), where display style var phi var phi is roughly 1.618.
All rectangles made by including or excluding a square from one end are also golden rectangle, which is a unique example of self-similarity.
Length of longer side a = 13
let the length of shorter side is b.
them by the property of golden rectangle,
a : b = 1: (1+sqrt 5)/2
by substitution method
13 : b = 1 : (1+sqrt 5)/2
b = 8.034
so to get the length of shorter side we need to divide by 1.6180
Read more about golden rectangle here:
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