fixing a little bug in Point.pythagorean

diff --git a/gzv.py b/gzv.py
index 6c0d4dc..ca94af9 100644 (file)
--- a/gzv.py
+++ b/gzv.py
@@ -30,7 +30,7 @@ class Point(object):
 
     @staticmethod
     def pythagorean(p1, p2):
-        return math.sqrt((p2.x - p1.x)**2 + (p2.y - p2.y)**2)
+        return math.sqrt((p2.x - p1.x)**2 + (p2.y - p1.y)**2)
 
 class Ball(object):
     DEFAULT_WIDTH = 10