Triangle Calculator Web App

A comprehensive web-based calculator that performs various triangle calculations with instant results. This interactive tool combines geometry fundamentals with modern web technologies to provide:

Key Features:

• 📐 Area Calculation: Uses Heron's formula to calculate triangle area

• 📏 Perimeter Calculation: Instantly computes total boundary length

• 🔺 Triangle Type Detection: Identifies:

  • Equilateral triangles

  • Isosceles triangles

  • Scalene triangles

• 📐 Right-Angle Check: Automatically detects right-angled triangles

• 🛠 Input Validation: Ensures valid triangle side lengths using:

  • Positive number checks

  • Triangle inequality theorem verification

• 🎨 Visual Feedback: Color-coded results:

  • Green: Successful calculations

  • Red: Error messages

  • Blue: Informational messages

• 🔄 One-Click Reset: Clear all fields instantly

Technical Specifications:

• Frontend Technologies:

  • HTML5 for structure

  • CSS3 for responsive design

  • JavaScript for calculations and logic

• Cross-Browser Compatibility: Works on all modern browsers

• Mobile-Friendly: Responsive layout adapts to screen sizes

How to Use:

1. Enter values for all three sides

2. Choose calculation type:

   • Area (Heron's formula)

   • Perimeter (Sum of sides)

   • Type detection (Triangle classification)

3. View instant results with precision to 2 decimal places

4. Reset between calculations with single button click

Input Requirements:

• Accepts both integer and decimal values

• Requires all three sides to be positive numbers

• Follows triangle inequality theorem constraints

Output Display:

• Clear error messages for invalid inputs

• Formatted numerical results

• Plain-English classification of triangle types

• Automatic right-angle detection

Customization Options:

• Easily modifiable color scheme

• Adjustable styling through CSS variables

• Expandable JavaScript functionality

• Responsive design parameters

This self-contained solution is ideal for students, teachers, and professionals needing quick triangle calculations without complex software requirements. The single-file implementation makes it easy to deploy on any web server or use locally.

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