Which shape is characteristic of Gothic serifs?

The characteristic shape of Gothic serifs is indeed associated with squares. Gothic typefaces, also known as Blackletter, typically feature bold, angular forms that create a distinct visual texture. The serifs in these typefaces are often square or nearly rectangular, contributing to their overall block-like appearance which is reminiscent of the architecture of Gothic cathedrals.

This square shape provides a strong, stable foundation for the rest of the letterforms, enhancing readability while also exhibiting a unique aesthetic that differentiates Gothic styles from other calligraphic traditions. The squared serifs contrast with softer, more rounded shapes found in other font families, such as those with curvilinear or circular qualities, which do not align with the angular nature inherent in Gothic design.