Copyright © Philip M. Parker, INSEAD. Terms of Use.
Definition: Straightedge |
StraightedgeNoun1. Hand tool consisting of a flat rigid rectangular bar (metal or wood) that can be used to draw straight lines (or test their straightness). Source: WordNet 1.7.1 Copyright © 2001 by Princeton University. All rights reserved. |
Crosswords: Straightedge |
| Specialty definitions using "straightedge": straightedge levelin. (references) |
(From Wikipedia, the free Encyclopedia)
An straightedge is used in ruler-and-compass constructions. It may be used to:
It is possible to do all straightedge-and-compass constructions without the straightedge. That is, it is possible, using only a compass, to find the intersection of two lines given two points on each, and to find the tangent points to circles. It is not, however, possible to do all constructions using only a straightedge. It is possible to do them by drawing one circle and its center, then using only the straightedge.
A real-world straightedge is a practical tool that approximates the idealized mathematical object described above.
Making a practical straightedge without access to a pre-existing straightedge or modern machine tools is an interesting problem in mechanical engineering. One way of doing this is to make a high-quality flat surface first, engineer's blue and polishing techniques, then to shape the straightedge so as to lie flat along the flat surface.
The method of producing accurate flat surfaces using three trial surfaces was invented by Sir Joseph Whitworth in 1830.
Another way of doing this is described in the link at the end of the article.
References:
Making a straightedge
External links
Source: adapted by the editor from Wikipedia, the free encyclopedia under a copyleft GNU Free Documentation License (GFDL) from the article "Straightedge."
| Domain | Title |
Books | |
Source: compiled by the editor from various references; see credits. | |
| Language | Translations for "straightedge"; alternative meanings/domain in parentheses. | ||||||||||||||||||||||||||||||||||
Albanian | mastar (screed). (various references) | ||||||||||||||||||||||||||||||||||
Arabic | المسطرة العدلة. (various references) | ||||||||||||||||||||||||||||||||||
Bulgarian | шаблонна линийка. (various references) | ||||||||||||||||||||||||||||||||||
Chinese | 直尺. (various references) | ||||||||||||||||||||||||||||||||||
Danish | vaterpas (levelling board, levelling rule, spirit-level), lineal (ruler). (various references) | ||||||||||||||||||||||||||||||||||
Dutch | liniaal (ruler, straight-edge). (various references) | ||||||||||||||||||||||||||||||||||
Esperanto | liniilo (ruler, straight-edge). (various references) | ||||||||||||||||||||||||||||||||||
Faeroese | strikusneis (ruler). (various references) | ||||||||||||||||||||||||||||||||||
French | règle large et plate, règle niveler. (various references) | ||||||||||||||||||||||||||||||||||
German | Messlatte (levelling board, levelling rule, rod, stadia rod, staff, surveyor's staff). (various references) | ||||||||||||||||||||||||||||||||||
Greek | κανόνας οριζοντίωσης (levelling board, levelling rule). (various references) | ||||||||||||||||||||||||||||||||||
Italian | regolo per livello (levelling board, levelling rule). (various references) | ||||||||||||||||||||||||||||||||||
Papiamen | linial (ruler), liñal (ruler). (various references) | ||||||||||||||||||||||||||||||||||
Pig Latin | aightedgestray régua (ruler). (various references) линейка (foot rule, foot-rule, rule, ruler, scale, straight-edge, wagonette). (various references) lenjir (ruler). (various references) regla de nivelar (levelling board, levelling rule). (various references) linjal (ruler). (various references) | ||||||||||||||||||||||||||||||||||
Derivations | |
Words beginning with "straightedge": straightedges. (additional references) | |
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"Straightedge" is suggested in spellcheckers for the following: straightedged. (additional references) | |
| Source: compiled by the editor, based on several corpora (additional references). | |
Scrabble® Enable2K-Verified Anagrams | |
| Words within the letters "a-d-e-e-g-g-h-i-r-s-t-t" | |
-2 letters: gadgetries, straighted, threadiest. | |
-3 letters: aigrettes, draggiest, dreggiest, earthiest, heartiest, heritages, hesitated, hesitater, raggedest, resighted, shattered, staggered, tragedies. | |
-4 letters: aigrette, ariettes, diethers, digester, disagree, dreggish, earthset, eggheads, gastight, gathered, gestated, greatest, grisette, hagrides, hardiest, headiest, headrest, hearties, hedgiest, heritage, hesitate, iterated, iterates, readiest, redigest, restaged, restated, retagged, retasted, rightest, saggered, seriated, shaggier, staggier, steadier. | |
| Words containing the letters "a-d-e-e-g-g-h-i-r-s-t-t" | |
+1 letter: straightedges. | |
| Source: compiled by the editor from various references; see credits. SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. | |
| 1. Definition 2. Crosswords 3. Usage: Commercial 4. Images: Slideshow | 5. Translations: Modern 6. Derivations 7. Anagrams 8. Bibliography |
Copyright © Philip M. Parker, INSEAD. Terms of Use.
