This study aims to reveal utilizes of basic geometrical elements in aspect to architectural form and space organization. In this consideration, architectural idea has been taken up within the framework ofform, space, and geometrical concepts throughout the study. Essentially, this work has three major objectives. The first is to look at the basic geometrical elements (point, line, plane, primary shapes, solid, etc.) which are based on the grammar of architectural form and then define the grammar that can be used to organize meaningful architectural compositions.The second objective is to relate these components of architectural form and to show how to organize them within the framework of geometrical rules. Through this organization the reader will develop to ability to consciously read a work of architecture and perhaps will even enhance his ability to design by using the grammar as a framework for logical self-criticism. The third is to look at the examples of building which have been designed according to geometrical concepts throughout the history of architecture.As a result of this overview it is aimed that architects still find some inspirations from earlier or current buildings while analyzing or designing them geometrically.It is hoped that in the end the reader will have developed a greater understanding and enjoyment of architecture. And if he/she is and architect, his/her works may become more effective. Key Words: Basic Geometry, Pure Geometrical Forms, Geometrical Organizations, Formal Design, Abstract Geometrical Concepts, Design Fundamentals, Geometrical Design, Architectural Morphology.