The semicolon should not be there.

Author: kaczowkad

lib/geometry/segment.rb

@@ -58,7 +58,7 @@ def intersection_point_with(segment)
       denominator = (point2.y - point1.y) *
                     (segment.point1.x - segment.point2.x) -
                     (segment.point1.y - segment.point2.y) *
-                    (point2.x - point1.x);
+                    (point2.x - point1.x)
 
       if numerator.is_a?(Integer) && denominator.is_a?(Integer)
         numerator = numerator.to_f