Definition:Straightedge/Also known as
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Straightedge: Also known as
The word straightedge can also be rendered as straight edge.
Some sources hyphenate: straight-edge.
Some sources use the term ruler, but this is inaccurate as a ruler is generally understood to have scale markings on it.
Sources
- 1969: C.R.J. Clapham: Introduction to Abstract Algebra ... (previous) ... (next): Chapter $8$: Field Extensions: $\S 40$. Construction with Ruler and Compasses
- 2008: Ian Stewart: Taming the Infinite ... (previous) ... (next): Chapter $2$: The Logic of Shape: Problems for the Greeks
- 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): straight edge