Which symbol designates triangulation surveys?

• A. Tri
• B. Ts
• C. Tsd
• D. Tsc

Answer: (A)

Triangulation surveys create a network of triangles, so the symbol used on maps to label those stations is the abbreviation that directly comes from triangulation: Tri. This label clearly signals that the point belongs to a triangulation network, distinguishing it from other survey marks or methods. The other designations aren’t standard markers for triangulation in this context, so they don’t convey the same definite meaning.