Abstract Fibonacci numbers are well known for some of its interesting properties [1]. Golden ratio is one of theamazing property. Fibonacci numbers and Golden ratio have applications in physics, astrophysics, biology,chemistry and technology [2]. This article proves property of determinant of Fibonacci numbers , geometricconsideration for Golden ratio and construction of Fibonacci subsequence from a Fibonacci sequence. Thedeterminant of first n2 n >= 2 of a Fibonacci numbers is zero. The golden ratio is shown to be sequence oflines converging to a line with slope as golden ratio. Method of constructing a subsequence from a Fibonaccisequence is presented. Examples presented in [2] is not exhaustive list of applications. One may find otherapplications in different domains of science.