Perpendicular

Pronunciation: /ˌpɜr pənˈdɪk yə lər/ Explain

Lines are perpendicular if they make a right angle where they intersect[1][2].

Lines that are perpendicular.
Perpendicular lines Perpendicular lines
Lines that are not perpendicular.
Non-perpendicular lines Non-perpendicular lines Parallel lines

References

  1. Keller, Samuel Smith. Mathematics for Engineering Students, Plane and Solid Geometry. pp 3, 64-65. www.archive.org. D. Van Nostrand Company. 1908. Last Accessed 1/2/2010. http://www.archive.org/stream/mathengineer00kellrich#page/5/mode/1up/search/perpendicular. Buy the book
  2. Casey, John, LL.D., F.R.S.. The First Six Books of the Elements of Euclid. pg 7. Translated by Casey, John, LL.D. F.R.S.. www.archive.org. Hodges, Figgis & Co.. 1890. Last Accessed 1/2/2010. http://www.archive.org/stream/firstsixbooksofe00caseuoft#page/7/mode/1up/search/perpendicular. Buy the book

More Information

  • McAdams, David E.. Line. allmathwords.org. All Math Words Encyclopedia. Life is a Story Problem LLC. 3/12/2009. http://www.allmathwords.org/en/l/line.html.

Cite this article as:

McAdams, David E. Perpendicular. 5/5/2011. All Math Words Encyclopedia. Life is a Story Problem LLC. http://www.allmathwords.org/en/p/perpendicular.html.

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Revision History

12/21/2009: Added "References". (McAdams, David E.)
9/2/2008: Expanded 'More Information'. (McAdams, David E.)
7/12/2007: Initial version. (McAdams, David E.)

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