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Ruler


A straightedge with markings to indicate distances. Although geometric constructions are sometimes said to be performed with a ruler and compass, the term straightedge is preferable to ruler since markings are not allowed by the classical Greek rules.


See also

Coastline Paradox, Compass, Geometric Construction, Geometrography, Golomb Ruler, Perfect Ruler, Simplicity, Slide Rule, Straightedge

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References

Smogorzhevskii, A. S. The Ruler in Geometrical Constructions. New York: Blaisdell, 1961.

Referenced on Wolfram|Alpha

Ruler

Cite this as:

Weisstein, Eric W. "Ruler." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Ruler.html

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