Interactive Geometry

Construct, measure, transform, and explore a Euclidean plane with dependent objects.

Dependency-aware constructions

Midpoints, intersections, bisectors, parallels, and perpendiculars stay linked to their parent objects as free points move.

Open Examples for a Pythagorean theorem construction, angle relationships, circle geometry, vectors, or transformations.

Use the compact toolbar on mobile, drag free points, pinch or wheel to zoom, and inspect exact measurements in the object panel.