A Cephalometric study, using Tetragon Analysis, was performed on Lateral Cephalograms of 60 Orthodontically untreated individuals from local population ranging from the age groups of 18 to 30 years. The purpose of this study was to evaluate the dentoskeletal characteristics of these subjects, to establish cephalometric norms using Tetragon analysis, and to evaluate the cephalometric values for Class II and Class III malocclusion groups using Tetragon analysis. The sample was divided into four groups (1 to 4) comprising of Normal occlusion, Class II Division 1 Malocclusion, Class II Division 2 Malocclusion, and Class III Malocclusion Respectively. Descriptive data that included mean, standard deviation and range values were calculated for each group. 95% confidence intervals (limits) were provided for Group I. Between Groups were compared by using Student's t-test. The results of this study indicate that the norms established from this study should be used to evaluate the dentoskeletal relationship of our local population, for Tetragon Analysis, because certain differences have been noted between the original and current study. Thus by using the local norms one will get more accurate picture of the dentoskeletal relationship for the local population.