Merge pull request #298 from matthewfischer/master

Correct definition for the Triangle inequality

Author: petertseng

triangle.md

@@ -2,6 +2,6 @@ The program should raise an error if the triangle cannot exist.
 
 ## Hint
 
-The sum of the lengths of any two sides of a triangle always exceeds the
-length of the third side, a principle known as the _triangle
+The sum of the lengths of any two sides of a triangle always exceeds or 
+is equal to the length of the third side, a principle known as the _triangle
 inequality_.