What does triangulation mean?
Triangulation is the practice of finding a reliable answer by bringing together several independent sources, methods, or lines of evidence. In figurative use, a researcher may triangulate a historical claim by combining interviews, documents, statistics, and observation, while a designer may assess a product through interviews, usability tests, and performance data. The term also has a precise technical meaning in surveying and geometry: unknown positions or distances are calculated from measured triangles whose vertices are known. Its appeal lies in the contrast it suggests with relying on a single viewpoint. A single source may be mistaken, incomplete, or biased, but converging evidence can expose weaknesses and support a more defensible conclusion. The metaphor is widely used in research, journalism, business, law, and design, although it does not imply that all sources are equally trustworthy. The technical sense is more formal and specialized, especially common in surveying, navigation, cartography, and engineering.
nounTriangulation is the process of determining unknown positions or distances by using measurements from known points and the geometry of triangles. In general use, it refers to checking a conclusion or interpretation by comparing independent sources, methods, or perspectives.
- The process of using independent sources, methods, or perspectives to verify an interpretation, conclusion, or account.
- The surveying technique of determining unknown locations by measuring triangles between known points.
- The mathematical or geometric process of using triangles to determine lengths, positions, or relationships.
"The researchers used triangulation, combining interviews, surveys, and archival evidence to establish a more reliable account."
"By triangulating the testimony of witnesses, the journalist was able to reconstruct the sequence of events."
"The land survey was completed using triangulation, with measurements taken from a network of carefully positioned reference points."
The plural is possible but less common than the uncountable use referring to the method or process generally.
"The analysts compared their triangulations before selecting the most consistent findings."
Three points can turn an uncertain claim into a well-supported one: triangulation is the art of letting independent lines of evidence meet.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does triangulation come from?
The word comes through Latin from triangulus, meaning “triangle,” which combines tri- (“three”) with angulus (“angle”). English borrowed the term for the geometric and surveying practice and later extended it figuratively to the verification of claims through multiple independent sources. Related English words include triangle, triangular, trilateral, and trigonometric.
Related word forms
How triangulation is actually used
The word is used formally in academic, technical, journalistic, and analytical contexts. Its figurative use emphasizes that several independent lines of evidence can strengthen a conclusion; it does not necessarily mean that every source is equally reliable.
Easily confused with triangulation
Triangulation determines positions primarily from measured angles and triangle geometry, whereas trilateration determines them from distances measured between known points.