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개념 기사 기사 작성법
내가 아는 수학개념을 쉽게 설명해주세요!
[개념 기사] 동방신기의 노래 "평행선"을 살펴보자
Yunite 2020.06.13 19:57

(대표이미지 출처:http://emis.kr/article/press/8/748/)

♫..~ 너와 난 평행선 그 위를 따로 걷다 그 길 끝에서 함께할 길을 찾아~♫  -평행선 가사중-

 

안녕하세요, 택 기자입니다. 유명 아이돌 "동방신기"는 평행선(Love line)이라는 곡을 2018년 8월3일 정규8집에 넣어 발행했습니다. 오늘은 이 노래가 수학의 평행선과 관련이 있는지 확인해봅시다.

평행선의 정의 

우선 평행선에 대해 알아봅시다. 평행선은 절대로 교차되지 않는 둘 또는 둘 이상의 직선 즉 평행한 직선입니다. 평행선은 우리 생활에 많이 밀접해 있습니다. 가장 좋은예는 기찻길입니다. 기찻길에서 열차의 양쪽 바퀴가 굴러가기 위해서는 레일과 바퀴가 맞물려야 합니다. 그러기 위해서는 기차레일이 평행해야 합니다

. (출처:Piaxby)

(다음과 같이 디자인을 평행선으로 하는 물품도 많습니다.)

 

동방신기의 평행선

~너와 난 평행선 그 위를 따로 걷다 그 길 끝에서 함께할 길을 찾아 지금 너와 나 조금 서툴지만 내게 점점 다가와 난 네게 점점 다가가~ 평행선의 가사입니다.

그런데 앞에서 평행선은 절대로 교차되지 않는다고 하였습니다. 그런데 평행선 위를 따로 걷다 만난다니요. 평행선은 절대로 만나지 않는 직선이기 때문에

다음가사와 같은일이 벌어질순 없습니다. 이 가사말고도 점점 다가온다는 가사가 반복되기 때문에 아쉽게도 이 노래는 수학의 평행선과는 관련이 없는것 같습니다. 그러나  이 가사에서는 그 길 에서 라고 나옵니다. 그럼 이렇게 생각하시는분들도 계실텐데요. "평행선이 끝나면 그냥 아무렇게나 만나는거 아니야?"

답변은 아닙니다. 수학에서는 모든걸 무한이 넘게 생각합니다. 그렇기 때문에 수학 사고력적으로 평행선이 끝나진 않죠.

아쉽게도 동방신기의 평행선은 수학적 개념과는 상관 없는 노래라는 결론이 나왔습니다

그게 아쉬어 제가 노래를 수학자들이 즐길수 있게 바꿔봤습니다!

너와 난 평행선 그 위를 따로 걷다 그 길 끝에서 함께할 길을 찾아 지금 너와 나 만나고 싶지만 같은 직선을 따라가~ 

(피터팍의 아이돌수학에나 나올법한 노래네요)

퀴즈! 평행선이 쓰이는곳 한곳을 소개해주세요!

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