Congruent triangles are often used to create company logos. Why are they used and what are the properties that make them attractive

Straight edged logo shapes such as squares and triangles suggest stability in more practical terms and can also be used to imply balance. ... These tend to be viewed as masculine attributes, so it's no coincidence that triangles feature more prominently in the logos of companies whose products have a masculine bias. Squares. If you are looking for a solid reliable shape to use within a logo then square is perhaps the best way to go. The use of vertical and horizontal lines creates a perfect balance for demonstrating reliability. Logos are a point of identification; they're the symbol that customers use to recognize your brand. ... Because a good logo is a visual, aesthetically pleasing element, it triggers positive recall about your brand that the name of your company alone might not.