Hellow guys, Welcome to my website, and you are watching 구면에서는 평행선을 그을 수 없나요?(비유클리드 기하, 타원기하학, 평행선 공준). and this vIdeo is uploaded by KD Math at 2021-04-03T07:06:23-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
