They help to define or reinforce our perception of the brand, as much if not more than the colors used. Squares, lines, and triangles can suggest structure, strength, balance, and organization. While circles imply positivity, relationships, and community.
To learn more, check out the infographic below created by FreeLogoServices.com and the team. To explain the psychological meaning behind the different shapes and how shapes influence our perception of a brand.
Please click on the image to enlarge.