How does the eckert maintain equivalence in high latitudes what happens to the meridians?

The Eckert IV projection maintains equivalence in high latitudes by preserving area, which means that regions are represented in their true proportional sizes. However, this projection distorts shapes, especially near the poles. In the Eckert IV projection, meridians are curved and spaced unevenly, converging towards the poles, which helps to minimize distortion of area while maintaining the overall shape of the continents. Consequently, while distances and angles may be distorted, the relative size of landmasses remains accurate.