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Pravi ugao

Primjer moderne arhitekture, dizajnirane sa mnogo pravih uglova.

U geometriji i trigonometriji, pravi ugao je ugao od 90 stepeni, koji orgovara četvrtini jednog obrta (to jest, četvrtini punog kruga). Može biti definisan kao ugao takav da dva takva ugla tvore polovinu obrta, ili 180°.[1]

Za linije, koje se sijeku pod pravim uglom, kaže se da su okomite, što je važna geometrijska osobina. Prisustvo pravog uglao u trouglu je faktor koji definiše praougli trougao.

Pravi ugao može se predstaviti preko različitih jedinica:

  • 90°
  • π/2 radijana
  • 8 tačaka (od 32 tačke kompasne ruže)
  • 6 sati (astronomski satni ugao)

U matematici, pravi ugao može biti dodatna jedinica za ugaog[2]. 1p=90°=π/2 rad=100g

Ovaj termin je posuđenica od latinske riječi angulus rectus; ovdje, rectus znači "uspravan", što se odnosi na uspravnu okomicu i horizontalnu baznu liniju.

Također pogledajte

[uredi | uredi izvor]

Reference

[uredi | uredi izvor]
  1. ^ Lindahl, G. (1987). Euklides Geometri. Stockholm, Natur och kultur: ISBN 91-27-72185-X
  2. ^ * convertworld.com angles
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Pravi ugao
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