세 개의 평행선 사이에 선분들의 비(The Ratio Of Lengths Of Line Segments Between Three Parallel Lines)

pdf	:	https://min7014.github.io/2019/2017111001.pdf
AlgeoMath	:	https://www.algeomath.kr/algeo/algeomath/app/view?id=5a787ed5112411e989430200634b0001
자료영상(YouTube)	:	https://youtu.be/6XlGpz9SQhw
강의영상(YouTube)	:	https://youtu.be/ZMnm9K7OaII
고유번호	:	math20191219001
수정날짜	:	20191221
제작날짜	:	20171110
고유주소	:	https://min7014.github.io/math20191219001.html

알림 (Notice)