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

You have to check that the new created triangle don't break the "Triangle inequality". You can ensure this by this little formula.

if !((a-b).abs < c && c < a + b)
  raise TriangleError
end

When you get the Error:

 exception expected but none was thrown.

Your code is probably throwing an exception while creating a regular triangle in this file. about_triangle_project.rb