What feature is part of both linear and rotating element requirements?

The feature that is part of both linear and rotating element requirements is a change of configuration. This concept is essential in synchro skating as it involves the skaters adjusting their formation or positioning during their performance, allowing for a dynamic display that enhances both linear and rotating elements.

In linear elements, skaters must execute various formations while maintaining a cohesive look and synchronization with each other. A change of configuration during a linear element could involve transitioning from a straight line to a staggered formation, showcasing the team's ability to adapt.

In rotating elements, the change of configuration also plays a crucial role, as skaters might shift their formations while executing rotations. This not only adds complexity but also showcases the group’s control and cohesiveness as they change patterns while maintaining their rotation.

Overall, the change of configuration is vital for creating visually appealing and technically proficient performances in synchro skating, unifying both linear and rotating elements.