Flat maps use latitude and longitude lines to help show how the earth curves.
Flat maps are accurate for directions.
Explanation:
One of the greatest challenge in creating a map of the world is the fact that the world is round, and maps are flat. The flattening of a sphere would necessarily involve several distortions. Cartographers have dealt wth this problem for centuries, and have found various ways to minimize these complications, such as using latitude and longitude lines to help show how the Earth curves. However, although flat maps might be accurate for directions, especially on a small scale, they are not very accurate when dealing with locations and large scales.
