Acute Triangle

Pronunciation: /əˈkyut ˈtraɪˌæŋ gəl/ Explain

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What can you say about the triangle when it is an acute triangle?
Manipulative 1 - Acute Triangle Created with GeoGebra.
acute triangle

An acute triangle is a triangle where all of the angles are acute angles.[1] An acute angle is an angle with a measure of less than 90° (π/2 radians). Since all triangles that do not have a right angle are scalene triangles, all acute triangles are also acute scalene triangles.

References

  1. Casey, John, LL.D., F.R.S.. The First Six Books of the Elements of Euclid. pg 8. Translated by Casey, John, LL.D. F.R.S.. www.archive.org. Hodges, Figgis & Co., . 1890. Last Accessed 8/6/2018. http://www.archive.org/stream/firstsixbooksofe00caseuoft#page/8/mode/1up/search/acute. Buy the book
  2. Le Clerc, Sébastien; Nattes, John Claude; . Nattes's practical geometry, or, Introduction to perspective. pg 11. Translated by Pyne, W. H.. www.archive.org. W. Miller. 1890. Last Accessed 8/6/2018. http://www.archive.org/stream/nattesspractical00leclrich#page/11/mode/1up/search/acute. Buy the book

Cite this article as:

McAdams, David E. Acute Triangle. 7/10/2018. All Math Words Encyclopedia. Life is a Story Problem LLC. http://www.allmathwords.org/en/a/acutetriangle.html.

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Revision History

6/18/2018: Changed image of acute triangle to manipulative. (McAdams, David E.)
6/12/2018: Removed broken links, updated license, implemented new markup. (McAdams, David E.)

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