Here's why:
* Wedge: The shape of the map resembles a slice of pie, with the center of the pie representing the pole (North or South) and the outer edge representing the equator.
* Sector: It's also called a sector because it depicts a specific sector of the globe, like a slice of a pie.
These maps are often used for:
* Polar regions: They're particularly useful for visualizing the Arctic or Antarctic, showing the surrounding continents and oceans in a circular arrangement.
* Specific regions: They can be used to highlight a particular region of interest, such as a continent or a group of countries.
* Visualizing global data: They can be used to show data distributions across the globe, especially when focusing on a specific hemisphere.
Let me know if you have any other questions!