Triangle Calculator Plus
Triangle Solver & Calculator
$3.99 · Designed for iPad. Not verified for macOS.
Triangle Calculator — Solve Any Triangle Instantly
The most powerful triangle calculator on iPhone/iPad. Whether you're a student solving geometry homework, an engineer calculating structural angles, or a teacher demonstrating trigonometry — Triangle Calculator gives you every answer in seconds.
6 POWERFUL SOLVER MODES
Tackle any triangle problem, no matter what values you have:
SSS — solve from 3 sides using the Law of Cosines
SAS — 2 sides and an included angle
ASA — 2 angles and the side between them
AAS — 2 angles and a non-included side
SSA — the ambiguous case, with automatic detection of 0, 1, or 2 solutions
Right Triangle — dedicated mode for right triangles using the Pythagorean theorem
LIVE TRIANGLE VISUALIZATION
Watch your triangle redraw in real time as you type. Animated sides, labeled angles, altitude lines, and vertex markers update instantly. Pinch to zoom for a closer look.
COMPLETE TRIANGLE PROPERTIES
Go beyond basic sides and angles. Every solution includes:
• Area and perimeter
• Circumradius R and Inradius r
• All 3 medians, altitudes, and angle bisectors
STEP-BY-STEP SOLUTIONS
Toggle on step-by-step mode to see exactly how each answer was calculated — formulas, substitutions, and results. Perfect for checking your homework or understanding the math behind the answer.
TAP TO COPY ANY RESULT
Tap any calculated value to instantly copy it to your clipboard — great for pasting into reports, spreadsheets, or other apps.
UNIT SUPPORT FOR EVERY FIELD
Switch between mm, cm, m, inches, and feet. All results update automatically. Ideal for engineering, construction, architecture, and woodworking.
BEAUTIFUL DARK MODE
Fully supports iOS Light and Dark Mode with a clean, distraction-free interface.
Perfect for:
- High school and college geometry & trigonometry students
- Engineers, architects, and surveyors
- Construction and carpentry professionals
- Teachers and tutors
- Anyone who needs fast, accurate triangle math
Thanks for your support and do visit nitrio.com for more apps for your iOS devices.
Ratings & Reviews
- Features and UI updates.
The developer, Heng Jia Liang, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Heng Jia Liang
- Size
- 882.7 KB
- Category
- Education
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - iPad
Requires iPadOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.3 or later.
- iPhone
- Languages
English and 8 more
- English, French, German, Japanese, Korean, Portuguese, Simplified Chinese, Spanish, Traditional Chinese
- Age Rating
4+
- 4+
- Copyright
- © Heng Jia Liang
