Math tools
Geometry Workspace
Build constructions, measure shapes, and explore transformations. Dependent objects follow their defining points.
Select parents from the object list without a mouse. Edit free point coordinates numerically, or focus a point and use arrow keys. Hold Shift to pan. Transform points first, then connect their images to build transformed shapes.
Construction tips
Choose a tool, then select its parent objects in order. Use Cancel selection to start over. Polygons need at least three distinct points. Angles show the smaller angle, from 0° to 180°. Two circles or a line and circle may have two intersection branches. Constructions without a finite solution are hidden and explained in the object list. Lengths use coordinate units.