If a block shape is outlined without skaters outside the shape, what type of block is it called?

A block shape outlined without skaters outside the shape is referred to as an open block. In synchro skating terminology, an open block is characterized by the absence of additional skaters creating a boundary around the formation. This may result in a visual cue that suggests the skaters within the block are performing independently while still maintaining the overall structure of the formation.

In contrast, a closed block typically consists of skaters surrounding the outer perimeter, forming a complete enclosure. A filled block has a distinct internal structure with skaters filling in the shape more completely, while a dynamic block often incorporates movements and changes within the formation itself to create a sense of motion or fluidity. Understanding the definitions and characteristics of each type helps skaters and coaches in both performance and evaluation settings.