主权项 |
1. A toy curved shell structure, comprising,
a. a plurality of interlocking pieces, wherein a piece has an interior surface and an exterior surface that are separated by a boundary-surface, and b. a first interlocking piece with a plurality of arms, and c. a second interlocking piece with an arm; and, d. the boundary-surface of each arm is located at the midpoint between a centerline of the arm and a centerline of the closest adjacent arm of the second interlocking piece; and e. the boundary-surface of the arms are parallel to each other for sufficient length to achieve a stable interlocking connection. |