日本は江戸時代の時西洋数学を変に翻訳
<iframe width="1280" height="975" src="https://www.youtube.com/embed/WNZyf46sh0E" title="Finding the Height of a Roof" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>