By Veronika Bondarenko The fast-food giant has a new burger and it looks a little familiar. Square hamburgers belong to Wendy’s (WEN) – Get Wendy’s Company Report. The company has used that shape as a way to its hamburgers apart from its rivals to show that it used fresh, never frozen ground beef sourced locally. Wendy’s burger patties are square to metaphorically show that the company doesn’t cut corners but they have been built on a promise set by company founder Dave Thomas. “When Dave Thomas founded Wendy’s he set out to create a great-tasting hamburger, one that he wasn’t getting at any o…