Geometry

AI geometry quiz diagrams that actually render

Rotations, reflections, and translations as real figures — not ASCII art, not broken LaTeX, not “image failed to load.”

How it works

Your AI writes a declarative scene in the FelixDeck import package. At import, FelixDeck rasterizes PNGs and places them mid-prose with {{diagram:key}} — including inside concept introductions.

Schema 1.3 diagrams map on concepts and questions
Server-side SkiaSharp render under assets/generated/
Honest alt_text for accessibility

Examples from a real import

Triangle reflected across x-axis and y-axis — Reflect in both axes

Triangle reflected across y equals x — Reflect in y = x

Point P reflected across y equals x with perpendicular bisector marks — Point reflection with distance marks

Point reflected across vertical line x equals 3 — Reflect in x = 3

Triangle translation with vector arrows — Translation

Transformed triangle on a coordinate grid — Coordinate transformation

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