Triangle Calculator
Triangle area is (1/2)×base×height. In a right triangle, a² + b² = c².
Name the quantities you have. Area needs base and height; a right triangle's hypotenuse needs both legs.
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Example problems
How this solver works
- Parse base/height or legs.
- Apply the matching formula.
Formula
Area of a triangle.
Worked examples
b=6, h=4
- A = 12
Answer: 12
Common mistakes
Using a slanted side as height
Height must be perpendicular to the chosen base.
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Frequently asked questions
SSS or SAS area?
Heron's formula and SAS (½ab sin C) are planned. This version covers base-height and Pythagorean legs.