There are a large number of cards. Of course, the maps show everything to scale. But if you look at the maps and do some calculations, then there will be significant errors, and the further from the equator and closer to the poles, the errors will be more and more. The problem is that the Earth is a ball, so all calculations will be correct on a globe, this is an accurate model of the earth. And if you transfer the surface to a plane, then due to the sphericity and bulge of our planet there will be distortions. They can only be avoided along the equator line.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.