Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Two structures in a simple‐point articulation and a double‐point articulation being rotated using simple.rotation() and double.rotation(), respectively. The structures depicted are a frog humerus and radioulna for the single‐point articulation and a skull and a detached mandible for the double‐point articulation
