# Question

In this exercise, we compute the distance between two points where the first is 2D and the second is 3D. How do we compute their difference when the dimensions are different?

# Answer

If we have points `p1`

and `p2`

represented as arrays and the dimension, that is, the size of the array, of `p1`

is less than the dimension of `p2`

. Then we make sense of the distance between these points by adding enough zeros to the end of the array for `p1`

until the sizes of the arrays are equal. Explicitly, if `p1 = [1,0]`

and `p2 = [1,1,,1,1]`

, then `Distance(p1,p2)`

is the same as `Distance([1,0,0,0], p2)`

.