Olympiad Maths Prep

Track / Stage 4 / 81 of 340 #341 of 2000

Problem 341

AMC 12 late, AIME early
Geometry Difficulty 4.6 Find the answer

What is the maximum number of axes of symmetry that the union of kk segments on a plane can have?

Official solution

2k2 k. Example: the segments are the major diagonals (diameters) of a regular 2k2 k-gon.

## Answer

2k2 k

Source: NuminaMath-1.5, licensed Apache-2.0. Statement and solution reproduced as published; topic, difficulty and ordering added by this site.