1. What is a Triangle Angle Calculator?

Definition: This calculator determines the missing angle in a triangle when two angles are known.

Purpose: It helps students, engineers, and designers quickly find missing angles in triangular shapes.

2. How Does the Calculator Work?

The calculator uses the fundamental triangle angle formula:

Where:

• \( A \) — First angle (degrees)
• \( B \) — Second angle (degrees)
• \( C \) — Third angle (degrees)

Explanation: The sum of all three angles in any triangle always equals 180 degrees. Enter any two angles to find the third.

3. Importance of Triangle Angle Calculation

Details: Proper angle calculation is essential in geometry, construction, engineering, and design projects involving triangular components.

4. Using the Calculator

Tips: Enter any two angles (leave one field empty or as zero). All angles must be positive numbers less than 180°.

5. Frequently Asked Questions (FAQ)

Q1: What if I enter all three angles?
A: The calculator will verify if they sum to 180°. If not, it will show an error message.

Q2: Can I use decimal values for angles?
A: Yes, you can enter angles with decimal precision (e.g., 45.5°).

Q3: What if my angles don't sum to 180°?
A: The calculator will indicate the angles are invalid as they must sum exactly to 180°.

Q4: Does this work for all types of triangles?
A: Yes, this applies to all triangles - acute, obtuse, right, scalene, isosceles, and equilateral.

Q5: Can I calculate angles in radians?
A: This calculator works in degrees only. For radians, use our Triangle Calculator Radians tool.