The concept of degree of indeterminacy is very important and confusing (normally) concept of classifying structures, which gives facility to it's readers to classify the structures into many groups like stable-unstable; determinate-indeterminate both externally and internally, before further investigation of internal forces and moments to get the theoretical idea of deformation characteristics of that structure. This topic works as a linking concept between the knowledge of Newtonian Mechanics to Structural Analysis and Strength of Materials. After finishing this course successfully, student will feel more confident to understand the concepts and difficulty level of problems related to structural analysis with ease and confidence for various planner and space structures.