Lattice Boltzmann Method (LBM) has been purported to solve various computational fluid problems. I utilized LBM to solve the steady-state lid-driven flow problem in a polygonal cavity. The classical lid-driven problem is fundamental to a number of problems such as roll coating & drying technique, cavities in surfaces of airplane bodies, and heat exchangers (Rajan and Perumal, 2021). I built a MATLAB code that implements basic LBM steps (collision, streaming, and reconstruction) using a single relaxation time model with a BGK collision operator.