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

In fact in the following code the condition a <= 0 is redundant. a + b will always be less than c if a < 0 and we know that b < c

    raise TriangleError if a <= 0 || a + b <= c