A Monte Carlo code is developed which simulates the interactions and transport of electron within a given medium. The angular distributions of the electrons transmitted through a medium of definite thickness are obtained by using this code. In order to investigate the contribution of elastic scattering to multiple-scattering, the angular distrubutions obtained by using the Rutherford differential cross section (DCS) modified by screening correction are compared with the results obtained from the uniform distribution (the constant differential elastic scattering cross section).