Parallel
Pronunciation: /ˈpær.əˌlɛl/ Explain
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Why does the length of C always equal the length of D.
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In Euclidean geometry, two
coplanar
lines are parallel if they do not
intersect.[2]
In metric geometries, parallel lines have the same slope. Since two lines
with the same
slope
have the same rate of change, for any change in x
corresponds to an identical change in y. This
means that the lines will always be the same distance apart and will never intersect.
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Transversals of Parallel Lines
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Is there any way to make opposite angles different for a transversal of parallel lines?
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When two lines are parallel, a transversal
of the two lines
intersects
each of the lines so that
corresponding
angles are equal.[3]
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References
- McAdams, David E.. All Math Words Dictionary, parallel. 2nd Classroom edition 20150108-4799968. pg 134. Life is a Story Problem LLC. January 8, 2015. Buy the book
- Casey, John, LL.D., F.R.S.. The First Six Books of the Elements of Euclid. pg 11. Translated by Casey, John, LL.D. F.R.S.. www.archive.org. Hodges, Figgis & Co.. 1890. Last Accessed 12/3/2018. http://www.archive.org/stream/firstsixbooksofe00caseuoft#page/11/mode/1up. Buy the book
- Stöcker, K.H.. The Elements of Constructive Geometry, Inductively Presented. pg 13. Translated by Noetling, William A.M, C.E.. www.archive.org. Silver, Burdett & Company. 1897. Last Accessed 12/3/2018. http://www.archive.org/stream/elementsofconstr00noetrich#page/13/mode/1up/search/transversal. Buy the book
- Keller, Samuel Smith. Mathematics for Engineering Students, Plane and Solid Geometry. pg 15. D. Van Nostrand Company. 1908. Last Accessed 12/3/2018. https://www.allmathwords.org/article.aspx?lang=en&id=Parallel. Buy the book
More Information
- Euclid of Alexandria. Elements. Clark University. 9/6/2018. https://mathcs.clarku.edu/~djoyce/elements/elements.html.
Cite this article as:
McAdams, David E. Parallel. 4/27/2019. All Math Words Encyclopedia. Life is a Story Problem LLC. https://www.allmathwords.org/en/p/parallel.html.
Image Credits
Revision History
4/27/2019: Changed equations and expressions to new format. (
McAdams, David E.)
12/21/2018: Reviewed and corrected IPA pronunication. (
McAdams, David E.)
12/1/2018: Removed broken links, updated license, implemented new markup, updated geogebra app. (
McAdams, David E.)
8/7/2018: Changed vocabulary links to WORDLINK format. (
McAdams, David E.)
12/30/2009: Added "References". (
McAdams, David E.)
10/23/2008: Initial version. (
McAdams, David E.)