Definition of closing line
mathematics
: the line vector that is necessary to complete the polygon representing a vector sum and thus to render the sum zero (as in obtaining the equilibrant of a set of forces)
especially
: the closing side of a plane traverse
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“Closing line.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/closing%20line. Accessed 20 Jan. 2022.
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