
Concept explainers
To Find: The reason why the Scott ensures that the two rows of the picture is parallel.

Answer to Problem 42SGR
The required reason is described.
Explanation of Solution
Given:
The given information is that the Scott wants to hang two rows of the framed in parallel lines on the living room wall and he first spaces the nails on the wall in the line for the two row and then he hangs a weighted plumb line from each nail and measures plumb lime from each nail and measures an equal distance below each of the nail for the second row.
Calculation:
Let Scott measures and equal distance below each of the nail for the second row in a way that two lines are parallel if and only if the perpendicular distance between the two points on one of the line and the other is constant so the two rows of the picture are in parallel as shown in Figure 1
Figure 1
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