その理由は次のとおりです。
* The Equator is a line, not a point: It circles the Earth horizontally, dividing it into the Northern and Southern Hemispheres.
* "Due north" means going towards the North Pole: So, anything north of the Equator is considered "due north of the Equator".
このように考えてみてください： Imagine a huge circle (the Equator) drawn around the Earth. Everything above that circle is "due north of the Equator".
例：
* 北米： The entire continent of North America is due north of the Equator.
* ヨーロッパ： Europe is also due north of the Equator.
* 北極圏： This circle is further north than the Equator, and everything within it is also due north of the Equator.
Let me know if you have other questions about geography!
