If the points `A(1,3)`, `B(-2,1)`, `C(x,2)` and `D(-1,5)` are given and `AB` is perpendicular to `CD`, find the value of `x`.

Explanation

To solve the problem step by step, we need to find the value of \( x \) such that the line segment \( AB \) is perpendicular to the line segment \( CD \).

### Step 1: Identify the coordinates of the points
The points given are:
- \( A(1, 3) \)
- \( B(-2, 1) \)
- \( C(x, 2) \)
- \( D(-1, 5) \)
...