# Carnot's theorem (perpendiculars)

> Condition for 3 lines with common point to be perpendicular to the sides of triangle

**Wikidata**: [Q62913479](https://www.wikidata.org/wiki/Q62913479)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Carnot's_theorem_(perpendiculars))  
**Source**: https://4ort.xyz/entity/carnot-s-theorem-perpendiculars