Triangle Calculator
Free online triangle calculator tool.
About Triangle Calculator
The Triangle Area Calculator computes the 2D surface area of any triangle when given the base and the corresponding height. Triangles are the most fundamental geometric shapes, heavily utilized in architecture, engineering, and computer graphics.
How Triangle Calculator Works
- Step 1: Base: Enter the length of the base of the triangle.
- Step 2: Height: Enter the perpendicular height from the base to the opposite vertex.
- Step 3: Calculate: The calculator multiplies the two numbers and divides by two to find the exact area.
Frequently Asked Questions
Does it matter which side I choose as the base?
No, any of the three sides can act as the base. However, the height MUST be the perpendicular distance from your chosen base to the opposite corner.
What if I only know the 3 sides, not the height?
If you only know the three sides (a,b,c), you must use Heron's formula. This specific tool requires base and height.
Does this work for right-angled triangles?
Yes! For a right triangle, the two sides that form the 90-degree angle act perfectly as the base and the height.