This document analyzes the seismic performance of different structural geometries for a 35-story building with a transfer slab system. Four structural models are considered: square, equilateral triangle, circle, and pentagon shapes. The models are analyzed using ETABS software for zone 2 and zone 5 seismic zones. Results show that the triangular structure had the shortest period and was more rigid than other structures. The pentagon structure had the highest base shear while the square and triangle structures had the lowest. Story drift was higher when considering second-order P-Delta effects. Displacement increased by 20% with P-Delta analysis compared to static analysis. The study evaluates parameters like displacement, drift, period, and base shear to determine the best structural