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Old Apr 8, 2023 | 8:53 am
  #413  
lsquare
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Originally Posted by jsloan
Flat on a rectangular map.

It may help if I add the great circle route for comparison:

A map from the Great Circle Mapper - Great Circle Mapper

You can see that, on a rectangular map, the actual flight path (approximated by the trip via IST) is “flatter” — closer to a straight line.
Make sense now.
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