Free💲 (see ⭐ below)

The only triangle solver that draws the values you enter and enters the values you draw.

Perfect for:
• Geometry teachers and students 🎓
• Construction and carpentry projects 🚧
• Navigation and orienteering ⛵
• Machinists and engineers ⚙️
• Physics math and astronomy 🪐
• Surveying 🌲
• Anyone solving triangles 📐

Both solve for AND ENTER: ✅
• Sides
• Angles
• Vertices
• All 3 Heights
• Perimeter
• Area
• Multiple Centers

Key Features: 🔑
• Identify and solve ambiguous triangles.
• Partial solutions. (e.g. Base and height alone solves for area)
• Inverse calculations. (e.g. Enter area and height to solve for base)
• Translate rotate reflect and scale transformations.
• Categorize scalene isosceles equilateral triangles.
• Categorize acute right and obtuse triangles.

Drawing Features: ✏️
• User drawable sides angles and vertices.
• Automatic center zoom and orientation.
• Precision aware drawing.
• Axis lock on xy and rθ vertices.
• Zoom and pan graphics.

Numeric Features: 1️⃣2️⃣3️⃣
• 15 angle units. (deg° rad d°m's" % grade 𝜏 +...)
• Metric SAE and universal length units.
• Automatic unit conversion.
• Long press icon expression entry (e.g. 7 + 5/12).
• Configurable precision.
• Optional zero and negative geometry.
• Numerically stable trigonometry extremes.
• Integrated xy and rθ coordinate systems.

Interface Features: 📱
• Right triangle fast entry by long pressing angle icon.
• Individual value memory.
• Numeric and graphic relationship visualization.
• Adjust values without clearing or pressing calculate key.
• Automatic triangle solution type detection.
• Dynamic adjustment of field sizes.
• Live and restorable settings.
• Visually educational icons.
• Dark background to reduce eye strain.
• Portrait and landscape layouts.
• Tabbed display option.
• Save and restore triangles.

Additional Features: 📎
• No ads.
• No In-app purchases.
• No subscription costs.
• No app permissions.
• No internet required after download.
• Free email support.

You have found the best triangle solver.

(⭐) Contact the developer by email to request a promotion code for your 100% free and fully functional download. Your email will not be sold or shared.

✉️: [email protected]

Paid downloads help keep the app ad-free and are donations.

Reviews with constructive feedback are appreciated and help improve the app.

In memory of my geometry teacher Mr. Robert Wegner.