# Visiting a friend

**Geometry**Level 3

In a special 4-dimensional city, every point in space is represented by a set of four numbers ( i.e. \( (4,2,2,1) \) ). The numbers form the coordinates of a given point. The distance between any two adjacent points is 1 unit. Jordan wants to get from his house at \( (2,2,2,2) \) to his friend Nadroj's house at \( (10,10,10,10) \). What is the distance in points that Jordan has to travel?