Explore. Calculate. Discover.

Geometry Tool

Construct points, lines, circles and polygons. Drag objects and explore measurements and geometric relationships.

All scientific tools
ProCalculator workspace

Your calculations run here in your browser. Save keeps a copy on this device.

Dynamic geometry

Use the toolbar to construct objects. Scroll to zoom; hold Shift and drag to pan. Dependent objects update as points move.

Get started

Choose a construction tool, then select or create points on the canvas. Move a point to see how the connected objects respond.

Start with three points and construct a triangle.

Built for exploration

  • Dynamic constructions
  • Angles & measurements
  • Dependent constructions

Save stores this workspace in your browser. Export a project file to keep a portable copy. Calculations are numerical approximations.