Geometrics
Geometrics are often the corner stone of any good logo. Lines, circles, squares, and triangles can be simple or strategically manipulated to create a lasting effect for your company.
Specifically, just like color, geometrics can convey feeling about your company. For example, circles create a soft and caring image and are often used in logos that represent companies focused towards women or children. Circles and curved lines also create a feeling of fun and activity.
Squares and triangles on the other hand, are more cutting edge and serious shapes. They are often associated with technology companies. Squares and triangles also create a professional and stable look that many companies often seek.
But, before you place a square or circle in your logo you must research your company and decide who its main customers are and where it is going. Only then will you be able to design a logo that truly represents your company.