Earth Grid
Explore geometry on and inside a three-dimensional Earth
Explore how regular solids divide a sphere and how their orientation changes the geographic positions of their vertices.
Key idea
Latitude measures angle north or south of the equator; longitude measures angle around Earth from the prime meridian. A geometric solid overlaid on the globe is a construction to explore, not evidence of a physical structure inside Earth.
Try this first
Place a regular solid on the globe, rotate it and compare where its vertices meet the surface. Lower globe opacity to inspect its internal edges. Save a geometry set, then load it again to revisit the same orientation and settings.
How to get started
- Drag to rotate the globe and zoom to choose a location. Place a point on the globe to anchor a solid.
- Select its solid type, alignment and rotation to see how its vertices project onto the surface.
- Compare constructions in globe or map view. Undo removes the last point; select a point to edit or delete it.
Explore a little further
Try another experiment
Place one solid, then rotate it while keeping the geographic lines visible. Compare the surface locations reached by its vertices. Save an orientation and return to it to distinguish a repeatable construction from a visual coincidence.
Good to know
Use the geographic overlays to compare orientations and locations on Earth. Satellite imagery has finite resolution, and saved geometry sets remain on your device unless exported or transferred.
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