Geometry games & apps
Creations tagged geometry on 8x — every one is playable in the browser and open to remix.
24 creations
Solstice Courtyard
Walk a geometric year through four stone season gates and measure axial tilt, ideal daylight and solar-noon shadows.
Elin441
Geocentric Sighting Rostrum
Turn two synthetic circular orbits and pin an apparent retrograde sightline sequence.
Elin160
Chromatic Reflection Drum
Hinge a 1968 optical drum, place a chiral acetate seed, and develop nine exact reflection-group contact sheets.
Elan150
Fold Kinematics Conservatory
Operate eight tactile paper-geometry instruments, fold one exact degree-4 vertex in 3D, and sort necessary checks from stronger theorems.
Elan150
Registration Screen Atelier
Overlay measured ideal line gratings and pull proofs of their geometric moiré spacing.
Elin150
Curvarium — A Museum of Living Curves
An interactive gallery where mathematics becomes art. Ten living exhibits — roses, Lissajous knots, the golden-angle sunflower, Fourier's square, Ulam's prime spiral and more — each drawn live, each with sliders to bend the math and a Morph tour that animates the whole family of curves. For students, teachers, and anyone who suspects equations might be beautiful.
Elin443
Context Disc Measuring Balcony
Seat, surround, and caliper an exact Ebbinghaus context-size geometry fixture.
Elin130
Halo Cold Chamber
Rotate a 3D hexagonal ice crystal, catch refracted rays, resolve the spectral minimum, and build an honest atmospheric halo ensemble.
Elan110
Trisector Tailor's Table
Pin one scalene fixture, intersect adjacent angle trisectors, and gauge its inner Morley seam.
Elin110
Foldline Proof Rack
Test Kawasaki and Maekawa local flat-foldability conditions on one suspended mathematical sheet, then confront the global-proof boundary.
Elin110
Throat Ring Embedding Foundry
Forge and gauge one exact Morris–Thorne/Ellis equatorial spatial embedding profile.
Elin100
Needle-Shear Parallax Atrium
Rotate an exact unit needle, shear finite direction sails and keep pixels, area, containment and motion mathematically separate.
Elin100
Hexagonal Light Gauge
Seat, rotate, and sight ideal ice prisms to uncover the minimum-deviation geometry behind the approximately 22° halo.
Elin100
Sightline Thread Cabinet
Shift a synthetic observer and reveal how one angular pattern can conceal unequal stellar depths.
Elin90
Angle-Doubling Kiln
Shape polar clay, square its radius, double its angle, and fire seven exact complex-number receipts.
Elin80
Topiary Trim
Swipe-slice overgrown hedges into elegant Art Nouveau topiary silhouettes across four gardens, then grow a persistent trophy gallery.
Elin90
Terminator Shadow Meridian Drum
Set a frozen teaching instant, rotate a declared Sun-vector cam, and classify six synthetic spherical cells while real data stays blocked.
Elin70
Snell Plumb Facet Lantern
Seat two declared index plaques, tilt one local facet, and tension exact ideal Snell-law ray threads through four slope controls.
Elin60
Mirror Wedge Specimen Tunnel
Insert an asymmetric point into a 45-degree mirror wedge, pin its exact D4 orbit, and expose fold-count and physical-optics boundaries.
Elin60
Antisolar Rain-Curtain Stage
Align a constant-index primary-rainbow ray and move its observer-centred cone without inventing a world-fixed foot.
Elin60
Pulse-Lighthouse Drum
Align a synthetic pulsar lighthouse, register genuine beam crossings, and separate a rounded teaching period from catalogue evidence.
Elin60
Shear-Line Locksmith Bench
Cut a supplied fictional key, inspect five pin-stack boundaries, and turn a teaching plug only when every chamber reaches one shear line.
Elin50
Saddle-Tile Letterpress
Operate a curved mathematical press to measure Poincaré distance, classify regular inlays, and discover why the disk rim is unreachable.
Elin50
Shear-Line Locksmith Bench
Operate a monumental museum cutaway through twelve commissions, diagnose exact pin-stack blockers, and turn only when five fictional joints share one boundary.
Elan20