Lecture VII

GA 208/1921-11-04/p036 ·1921-11-04 · English MediumMedium alignmentSome paragraph re-numbering between this translation and the German original — the locus may slip by a paragraph or two.
Record: unknown. How this text was taken down (shorthand transcript, listeners' notes or manuscript) is not on record here. Unknown is not an assurance of a stenogram: check the edition's own notes before resting an argument on one word.

If they then want to give the location of point A, let us say (Fig. 23), they measure the distance from the three planes defined by the three lines. So if you have those three lines, you can give the location of any point. All it needs is to assume these three axes at right angles to one another, which are called “co-ordinates”. They enable us to define the location of any other point, or line, which after all can only be defined by the points it contains, and so on. (Fig. 23)

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Cite: GA 208/1921-11-04/p036 · edition English