The famous Langley problem is a type of problem called "Adventitious Angles" problem because it is a matter of chance that we will be able to solve this problem. It appears to be an easy problem, but it is deceivingly difficult.

Reference: The Mathematical Gazette, UK

Author: Edward M. Langley

Title: A problem

Page: 173

Issue: October 1922

Category: M Note 644

Last updated: February 13, 2007