http://kin.naver.com/db/detail.php?d1id=1&dir_id=10701&eid=%2BehKmSZ91PXfeRokgKx2HK%2FHCjOTTrCL(태그 쓸지를 몰라서;; 죄송..)  여기서 유근이가 삼각형의 내각의 합이 180도가 아니라고 했잖아요
한국에서 한점 북극에서 한점 미국에서 한점 찍고 연결하면 180이 넘는다고.. 아무리 천재라고 해도 이 말엔 의심이 가는.. 이게 진짜 일까요? 공대다니는 횽아들.. 대답좀 해주세요~