Quantum redactiones paginae "Triangulum" differant

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Xqbot (disputatio | conlationes)
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'''Triangulum''' est [[geometria|figura geometrica]] plana cui sunt tria latera et tres [[angulus|anguli]].
 
== Summa anguli ==
Summa angulorum trianguli est 180°: ''a'' + ''b'' + ''c'' = 180°
 
== Area ==
Area A trianguli datur a formula
::: <math>A={1\over2}\, c\, h</math>
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::: <math>A={1\over2\,} c\, b\, sin\alpha = {1\over2\,} a\, b\, sin\gamma = {1\over2\,} a\, c\, sin\beta</math>.
 
== Triangulum rectum ==
[[Fasciculus:Triangolo-Rettangolo.png|thumb|Triangulum anguli recti.]]
'''Triangulum rectum''' seu '''triangulum anguli recti''' est triangulum cui est unus angulus rectus (i.e., 90° magnus). Latus angulo recto contrarius dicitur ''[[hypothenusa]]'', et alia duae latera dicuntur ''catheta.'' Respecto triangulis rectis sunt duae theoremata specialia maximi momenti: [[theorema Pythagorae]] et [[theorema altitudinis]].
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:::<math>\text{hypothenusa}^2 = \text{catheta prima}^2 + \text{catheta secunda}^2 \ </math>
 
=== Theorema altitudinis ===
[[Fasciculus:Triangulum.JPG|thumb|Triangulum rectum altitudo ''h'' monstrans, et quoque punctum ''R'' et partes ''p'' et ''q''.]]
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:::'''Solutio''': 4*9 = 36, et ''h'' = 6 pedes.
 
== Nexus externi ==
* [http://www.mathe-abi.de/Hilfen/Dreieck/dreieck.html De triangolo, in theodisce]
* [http://www.satzdespythagoras.de/ De sententia pythagoras, in theodisce]
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[[arc:ܡܬܠܬܐ]]
[[arz:مثلث]]
[[as:ত্ৰিভূজ]]
[[ast:Triángulu]]
[[ay:Mujina]]