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Why do we use topographical maps ? What does every map / hill on a topographical map start at & How do you know ?

User FakeDIY
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We use topographic maps to calculate the height of a hill, mountain,and ect. Topographic maps dont always start at the same number it really depends how u are mesuring it.
I really hope this helps you because this is how i was taught.
User Stanislav Smida
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