shortest route from A to B
Source: 1963 Swedish Mathematical Competition p5
March 21, 2021
combinatorics
Problem Statement
A road has constant width. It is made up of finitely many straight segments joined by corners, where the inner corner is a point and the outer side is a circular arc. The direction of the straight sections is always between () and (). A person wishes to walk along the side of the road from point to point on the same side. He may only cross the street perpendicularly. What is the shortest route?[figure missing]