👉 The term "isopleuran" is a mathematical concept used in geodesy and hydrology. It refers to the relationship between the elevation of an object or measurement and its location on a map, based on a fixed reference plane. In simple terms, it states that if you look at something from any point on a map, the distance from the center of the map (which is usually the origin) will be the same as the distance to the object being measured. This is because the Earth
