GeoProof
GeoProof: A free browser collection for exploring geometry theorems through live figures and guided paths. Ranked #11 of 34 in Geometry Learning Software by our editors (6.2/10); pricing: Free plan; best for self-guided learners exploring geometry theorems.
At a glance
- Editor score6.2 / 10
- PricingFree plan
- Best forSelf-guided learners exploring geometry theorems
- Free planYes
- Paid fromNone
- Dynamic constructionsYes
- Facts checked28 Sep 2026
Where it wins
- 73 interactive theorem explorers span core geometry topics
- Dragging figures updates relationships live, with machine-precision construction checks
- Free guided learning paths, quizzes, search, and embeddable explorers
Where it doesn't
- Work in progress, so the collection may change
- No formal proof-exercise functionality
- Embeds are intended for non-profit educational contexts
Our verdict on GeoProof
GeoProof is a free, browser-based collection of interactive geometry theorem explorers from Knovay. Its 73 explorers cover triangles, circles, angles, quadrilaterals, polygons, transformations, and area formulas. Learners can drag figures and watch geometric relationships update live; constructions are verified to machine precision. Guided topic paths and a practice quiz support self-guided study, making GeoProof a fit for learners who want to investigate how theorems behave rather than only read explanations.
The central feature is manipulation: figures respond as learners change their geometry, making relationships visible while they explore. Topic paths organize the material, search finds explorers by name or topic, and individual pages can be projected, linked, or embedded in non-profit educational contexts. This gives the collection a useful role for independent exploration and classroom demonstrations, though the available material is centered on theorem explorers and a quiz rather than formal proof exercises.
GeoProof runs on the web and requires no installation, plugins, account, or sign-up. It is free for educational use, with no paid plan structure described. The site identifies itself as a work in progress, so it may suit learners comfortable with an evolving resource. Choose it for free, interactive exploration of geometry concepts; look elsewhere if formal proof practice or a more established classroom tool is central to your needs.
GeoProof pricing
GeoProof fact sheet
| Free plan | Yes |
|---|---|
| Paid from | None |
| Dynamic constructions | Yes |
| Proof practice | Not verified |
| Problem practice | Yes |
| Classroom tools | Not verified |
| Supported platforms | Web |
| Offline mode | Not verified |
| Deployment | Cloud |
| Platforms | Web |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan |
| Website | geoproof.knovay.com |
| Facts checked | 28 Sep 2026 |
Alternatives to GeoProof
- GeoGebraA broad geometry and mathematics suite with adaptive practice, classroom tools, and offline apps.9.0
- GNU Dr. GeoA free, programmable desktop geometry environment for dynamic constructions and exploration.8.2
- KigA free desktop tool for exploring constructions, with macros and drawing features.7.7
See all GeoProof alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
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