# Langley’s Adventitious Angles

> Geometry puzzle

**Wikidata**: [Q18345073](https://www.wikidata.org/wiki/Q18345073)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Langley's_Adventitious_Angles)  
**Source**: https://4ort.xyz/entity/langley-s-adventitious-angles