Calculate unknown sides and angles of a triangle with ease. Supports various input combinations, including two angles and one side, two sides and one angle, or three sides.
Triangle Solver by William Jockusch




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With an average user rating of 4.3★, the If isosceles triangle ABC has a 130° angle at vertex B, which statement must be true? category is one of the App Store's strongest. Browse all 201+ apps and games we track, sorted so the most loved ones surface first.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | 4.2★ (30) | No | No | Aug 2026 | ||
| 2 | Free | 4.7★ (768) | No | Yes | Sep 2026 | ||
| 3 | Free | 4.8★ (174) | No | Yes | Sep 2026 | ||
| 4 | Free | 4.2★ (41K) | Yes | Yes | Sep 2026 | ||
| 5 | Free | — | No | Yes | Aug 2026 | ||
| 6 | Free | 4.4★ (295) | Yes | No | Sep 2026 | ||
| 7 | Free | 4.7★ (1.6K) | No | Yes | Sep 2026 | ||
| 8 | Free | 3.5★ (8) | No | No | May 2026 |




Calculate unknown sides and angles of a triangle with ease. Supports various input combinations, including two angles and one side, two sides and one angle, or three sides.




This app quickly calculates unknown angles and sides of right-angled triangles. It offers a workings view for detailed solutions, scale drawings, and a formula reference. Input angles in various formats and customize decimal precision.





Solve over 300 geometry construction problems on a triangular grid without complex calculations. Explore 26 subjects, discover geometric laws, and improve your intuition. Features a glossary of over 70 terms.