# Descriptive Geometry/Distances/True Length

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Finding the true length is a fundamental process in descriptive geometry that advances the problem-solving to the next steps to reach the solution. To find the true length of a line you must take a view parallel to the line; in other words, if a line is a parallel to the folding line in one view, it is shown in true length in the adjacent view. If a line is parallel to the folding line in both adjacent views, as for example in both the top and front views, then it is shown in true length in both of those views, and in such cases no additional work must be done if the only goal is to find the true length of the line.