Скачать или смотреть DSE 立體續集，用平行線估兩面交接線聽過未？

00:00 對稱
04:49 三垂線定理
07:55 單一接觸點
14:00 平面延展

本集主題：兩面夾角
Theme of the episode: Angle between Planes

覺得數學好難？數學係打天才波？有DSE系列幫你好似中文作文咁樣拆題解題，用淺白的語言完整咁傳授數學高手用咗唔自知的心法！
Thinking Maths is way too tough? Born to be poor at Maths? Our high school series breaks down typical questions you see with a brand new yet comprehensive system which masters of Maths often internalize but never realize they do!

本頻道旨在以淺白的方式介紹大學數學本科的內容，同時亦會利用較初階數學課題協助眾位學生鑽研屬於自己的解題心法。小弟個人分享，不吝賜正。 This channel aims to introduce degree mathematics, requiring minimal foundation from the audience. At the same time, we help students build their own system on problem solving using topics of elementary mathematics. Comments on mistakes are very welcomed.