Interactive compass-and-straightedge tools, drag-and-drop proof builders, and coordinate geometry labs for visual learners.
Open WorkspaceVirtual compass and straightedge for creating precise constructions — bisectors, perpendiculars, and more.
Drag-and-drop statements and reasons to construct valid geometric proofs step by step.
Measure angles, lengths, areas, and perimeters dynamically as you modify constructions.
Apply and compose translations, rotations, reflections, and dilations to see congruence and similarity.
The proof builder made abstract logic tangible. My students actually enjoy writing proofs now.Mr. DeSilva, Geometry Teacher
I never understood transformations until I could drag shapes around in the lab.Lin C., Grade 9
Explore points, lines, angles, triangles, quadrilaterals, polygons, circles, and their properties with dynamic constructions you can manipulate.
Build two-column proofs, paragraph proofs, and flow proofs using a drag-and-drop interface with theorem and postulate libraries.
Work with distance, midpoint, slope, equations of lines and circles, translations, rotations, reflections, and dilations on the coordinate plane.