Exterior angle theorem
id:
exterior-angle-theorem-239-15262255
title:
Exterior angle theorem
text:
The exterior angle theorem is Proposition 1.16 in Euclid's Elements, which states that the measure of an exterior angle of a triangle is greater than either of the measures of the remote interior angles. This is a fundamental result in absolute geometry because its proof does not depend upon the parallel postulate. In several high school treatments of geometry, the term "exterior angle theorem" has been applied to a different result, namely the portion of Proposition 1.32 which states that the m
brand slug:
wiki
category slug:
encyclopedia
description:
Exterior angle of a triangle is greater than either of the remote interior angles
original url:
https://en.wikipedia.org/wiki/Exterior_angle_theorem
date created:
date modified:
2022-11-16T09:14:49Z
main entity:
{"identifier":"Q5421989","url":"https://www.wikidata.org/entity/Q5421989"}
image:
fields total:
13
integrity:
14