  This work aims to present a representation for the Kagom\'e and pyrochlore
lattices for Monte Carlo simulation and some results of the critical
properties. These geometric frustrated lattices are composed of corner sharing
triangles and tetrahedrons respectively. The simulation was performed with the
Cluster Wollf Algorithm for the spins updates using the standard ferromagnetic
Ising Model. The determination of the critical temperature and exponents was
done through the Histogram Technique and the Finite-Size Scalling Theory.
