1. What is a Triangle Angle Calculator?

Definition: This calculator verifies or calculates the angles of a triangle based on the principle that the sum of interior angles in any triangle equals 180°.

Purpose: It helps students, teachers, and professionals verify triangle angles or find missing angles when two are known.

2. How Does the Calculator Work?

The calculator uses the fundamental triangle angle formula:

Where:

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

Explanation: Enter any two angles to calculate the third, or enter all three to verify if they form a valid triangle.

3. Importance of Triangle Angle Calculation

Details: Proper angle calculation is essential in geometry, trigonometry, engineering, and construction to ensure accurate designs and measurements.

4. Using the Calculator

Tips: Enter at least two angles to calculate the third. All angles must be between 0° and 180°. The sum must equal exactly 180° for a valid triangle.

5. Frequently Asked Questions (FAQ)

Q1: What if the angles don't sum to 180°?
A: The calculator will indicate the angles are invalid for a triangle. Check your measurements or calculations.

Q2: Can I use this for right triangles?
A: Yes! Right triangles have one 90° angle, and the other two must sum to 90°.

Q3: What about obtuse or acute triangles?
A: The calculator works for all triangle types - acute (all angles < 90°), right (one 90° angle), and obtuse (one angle > 90°).

Q4: How precise are the calculations?
A: Results are shown to 2 decimal places, but the calculation uses higher precision internally.

Q5: Can I calculate with only one known angle?
A: No, you need at least two angles to determine the third in a triangle.