Sphere Geometry Diagram - Great Circles, Meridians, and Key Points #1413322 (License: Personal Use)

This black-and-white line illustration depicts a sphere with labeled points P (north pole), C and D (equatorial points), and A, B, E, H marking intersections of great circles and meridians; dashed lines indicate hidden arcs. The horizontal line through C-D represents the equatorial plane, while vertical curves denote longitudinal meridians intersecting at P. It serves as a foundational visual for understanding spherical coordinates and geodesics.

Used in educational content on geometry, trigonometry, cartography, or astronomy to explain spherical surfaces, coordinate systems, and navigation principles; targets students, educators, and STEM learners seeking conceptual clarity.