Ruby Koan 151 raising exceptions

Question

I\'m going through the ruby koans, I\'m on 151 and I just hit a brick wall.

Here is the koan:

# You need to write the triangle method in the file \'trian         


        

Answer 1

This one did take some brain time. But here's my solution

def triangle(a, b, c)
  # WRITE THIS CODE
  raise TriangleError, "All sides must be positive number" if a <= 0 || b <= 0 || c <= 0
  raise TriangleError, "Impossible triangle" if ( a + b + c - ( 2 *  [a,b,c].max ) <= 0  )

  if(a == b && a == c)
      :equilateral
  elsif (a == b || b == c || a == c)
      :isosceles
  else
    :scalene
  end
end