Solution

162427

First name
Max
School
West Island School
Country
Age
0

One solution I found:
a = longer side of the triangle (excluding hypotenuse)
b = shorter side of the triangle
x = side length of the triangle

An equation that would work in all cases is a = 3b.
If a = 3b, then a = 4x, 3b = 4x, and so on.

However, if a and b are multiples of 3, then a = 2b would also work
If the above is true, then a = 3x, 2b = 3x and so on.