What type of engine design commonly features a squared cylinder arrangement?

The type of engine design that commonly features a squared cylinder arrangement is the V-engine. V-engines are characterized by two banks of cylinders arranged in a V shape, which allows for a compact engine design while accommodating a larger number of cylinders. In many cases, particularly with high-performance V-engines, the cylinder spacing and arrangement can create a squared appearance, especially when viewed from the front. This arrangement contributes to the engine's structural rigidity and the ability to generate significant power in a relatively small footprint.

The inline engine arrangement typically has its cylinders aligned in a straight line, which does not create a squared appearance. Flat engines, also known as opposed engines, maintain their cylinders horizontally, giving them a low profile but not a squared configuration. Rotary engines have an entirely different design, utilizing a triangular rotor instead of cylinders, making the concept of “squared cylinder arrangement” inapplicable. Thus, the V-engine is the appropriate answer for its distinctive squared cylinder characteristic.