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수학동아 - 폴리매스
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[기하] 찾았다! 정이십면체 표면을 달리는 직선 경로
수학동아 2020.11.25 00:28 조회 951
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페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

 

지구에서 멀리 멀리 떨어진 어느 정다면체 행성에 매일 열심히 훈련하는 마라토너가 살고 있었어요. 그런데 이 마라토너는 부끄럼이 많아 동네 사람들을 마주치는 걸 싫어한답니다. 직선으로만 달리는 마라토너가 다른 사람을 마주치지 않고 제자리로 돌아오는 경로를 찾을 수 있을까요? 정다면체의 경로를 찾는 '사교성 없는 조거' 문제를 함께 풀어봅시다. 

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