[74] 重心座標 補足 垂心と傍心 成分が負の場合

Contents: Thanks for watching. This is an extra explanation video to the previous one about how to use barycentric coordinates or center-of-mass coordinate system. I added the expression of orthocenter and executer of triangle, and left a note about what to interpret when coefficients of vectors are negative even though they represent the ratio between corresponding areas. 動画の内容：知る人ぞ知る重心座標の補足です。残りの五心（垂心と傍心）の重心座標についての補足と、 成分が負の場合についての注意です。とても便利です。 -------------------------------------------------------------------------------- 主に数学に関することを動画にしています。みんなで面白いことをあーだこーだ言えたらいいなと。 動画に関するアドバイス（声量・ライト・ペン・板書など）や動画にしてほしいことなど何でも受け付けております。むしろください。 連絡等はこちらに→maths.toshi@gmail.com Thanks a ton for visiting here and reading this. Please subscribe this channel and give this video a like if you like it. I usually make videos about mathematics, but any kinds of topics which I find interesting and attractive. All I want to do is just discuss and talk about them, and communicate with people who are into maths, after all. I am afraid to say that I basically speak in Japanese in my videos; however, I am going to try and write things down in the way everyone can comprehend what they are, not without mathematics literacy at least :-). I would appreciate if you gave me any kind of advice ranging from the topics you would like me to bring about to the volume, my handwriting, and the lighting in my videos. Please do not hesitate to leave any comments for this channel growth, and help me to enrich this channel.