Map makers use map projections to transform the Earth onto a flat surface. One of the most popular world map projections is known as the Mercator Projection. You’ll have seen it loads of times and likely thought it looked perfectly normal. It was originally invented by Gerhardus Mercator in 1569 to allow sailors to plot a straight course between ports.
So just how misleading can this map be?
Take the quiz to find out: The mind-blowing world map quiz | BBC Bitesize