Lets say you want to quickly pick points in order to nail some wood together to build a wooden ship.(adsbygoogle = window.adsbygoogle || []).push({});

You can use one line to pick numerous points, or you can pick 1 precise point using two lines on a flat surface that is 2 dimensions. You can use various angles in between these two lines, or you can use an orthogonal relationship that is the coordinate axis.

Where do you think one should start before adding another plank onto the ship in front or in the back of this starting plank?

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# Euclidean space

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