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Geographers identify three main types of regions: formal regions defined by clear boundaries and characteristics, functional regions based on a central point and the activities connected to it, and perceptual regions that are based on people's feelings and attitudes towards a particular area.
There are 3 types of regions. They are: Formal, Functional and Perceptual.
Fuctional and formal
The slums of Detroit can be considered a functional region because they share a common function or characteristic, which in this case is the presence of impoverished living conditions and lack of resources. The boundaries of this area are not formally defined but are based on the commonality of living conditions within it.
formal
The Grand Canyon is a Functional Region
The United States has been divided in regions identified as formal, functional or perceptual. Texas is classified as a formal region where all traits are based on measurable data.
1. Formal Regions are Areas in which certain characteristics are found through out the area.2. Functional Regions consist of a central place and the surrounding places affected by it.3. Perceptual Regions are defined by people's feelings and attitudes about areas.
Aral sea in Kazakhstan is a formal functional region
formal
Germany is a formal region, because it has defined borders. All countries are formal regions because of this, for example, if you were close to the border of Germany and Austria and in Germany, you are still in Germany.
perceptual - the pretty part of nothern Germany functional- the Berlin urban area formal-Germany