Triangulation Calculator
Calculate precise distances and angles between known points for surveying and engineering applications
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Input Coordinates
Results
Distance AB: –
Distance BC: –
Distance AC: –
Angle at A (∠BAC): –
Angle at B (∠ABC): –
Angle at C (∠ACB): –
Area of Triangle: –
Perimeter: –
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Frequently Asked Questions
What is triangulation in surveying?
Triangulation is a surveying method that measures the angles in a triangle formed by three survey control points. Using trigonometry and the measured length of just one side, the lengths of the other sides can be calculated. This method is fundamental in surveying for establishing precise horizontal control networks.
How accurate is this triangulation calculator?
Our calculator uses precise trigonometric functions to provide highly accurate results. For typical surveying applications, the calculations will be accurate to within computational limits (typically 15-16 decimal places). However, real-world accuracy also depends on the precision of your input measurements.
Can I use this calculator for 3D coordinates?
This calculator currently works with 2D (planar) coordinates only. For 3D triangulation calculations, you would need to account for elevation differences and use more complex spherical trigonometry formulas.
What units should I use for the coordinates?
You can use any consistent linear units (meters, feet, etc.) as long as all coordinates are in the same unit system. The calculator will return distances and areas in the same units you input.
How is the area of the triangle calculated?
The area is calculated using the shoelace formula (also known as Gauss’s area formula), which is a mathematical algorithm to determine the area of a simple polygon whose vertices are defined in the plane.