Does the theorem work with all triangles?

No. The Pythagorean theorem ONLY works with right triangles (those that have a 90-degree angle). If the triangle doesn't have a right angle, you cannot use this formula.

Can I use decimals in the calculator?

Yes, the calculator accepts decimal numbers. You can enter values like 3.5, 12.75, or 0.8. Results will be shown with two decimal places of precision.

How do I know which side is the hypotenuse?

The hypotenuse is ALWAYS the longest side of the right triangle and is the side opposite the 90-degree angle. The other two sides are called legs.

What do I do if I get an error in the calculator?

The calculator requires exactly TWO values to work. If you enter fewer than two or all three values, it will show an error. Additionally, all values must be greater than zero.

Why don't my manual calculations match exactly?

Small differences are usually due to rounding. The calculator uses high precision internally and only rounds the final result. If you calculate manually with rounded decimals at each step, you may get a slightly different result.

Can I use different units for each side?

No. All sides must be in the same unit of measurement. If you have one side in meters and another in centimeters, you must convert them to the same unit first before using the calculator.

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5 Real-Life Applications of this Mathematical Formula

📅 October 29, 2025

The Pythagorean theorem isn't just a mathematical formula we learn in school. It's a fundamental tool we use every day, often without realizing it. Discover how this ancient theorem impacts your daily life.