1. Noun
The series or network of triangles into which the face of a country, or any portion of it, is divided in a trigonometrical survey; the operation of measuring the elements necessary to determine the triangles into which the country to be surveyed is supposed to be divided, and thus to fix the positions and distances of the several points connected by them.
2. noun
Checking a question from several angles to strengthen confidence in the findings.
The use of multiple methods, data sources or perspectives to examine the same question.
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