diff --git a/source/GM-Core.package/GMCircleCollisionDetectionShape.class/instance/circleAt.mustIntersectRectangleAt.withExtent..st b/source/GM-Core.package/GMCircleCollisionDetectionShape.class/instance/circleAt.mustIntersectRectangleAt.withExtent..st
index e327b9c8..5fd531f6 100644
--- a/source/GM-Core.package/GMCircleCollisionDetectionShape.class/instance/circleAt.mustIntersectRectangleAt.withExtent..st
+++ b/source/GM-Core.package/GMCircleCollisionDetectionShape.class/instance/circleAt.mustIntersectRectangleAt.withExtent..st
@@ -1,4 +1,4 @@
 utility
-circleAt: circlePos mustIntersectRectangleAt: rectanglePos withExtent: extent
-	^ ((self absDistanceFrom: circlePos to: rectanglePos) x <= (extent x / 2) or:
-		[(self absDistanceFrom: circlePos to: rectanglePos) y <= (extent y / 2)])
\ No newline at end of file
+circleAt: circlePos mustIntersectRectangleAt: rectanglePos withExtent: rectangleExtent
+	^ ((self absDistanceFrom: circlePos to: rectanglePos) x <= (rectangleExtent x / 2) or:
+		[(self absDistanceFrom: circlePos to: rectanglePos) y <= (rectangleExtent y / 2)])
\ No newline at end of file
diff --git a/source/GM-Core.package/GMCircleCollisionDetectionShape.class/instance/circleAt.withRadius.canIntersectRectangleAt.withExtent..st b/source/GM-Core.package/GMCircleCollisionDetectionShape.class/instance/circleAt.withRadius.canIntersectRectangleAt.withExtent..st
index 743b4c60..ea5689b9 100644
--- a/source/GM-Core.package/GMCircleCollisionDetectionShape.class/instance/circleAt.withRadius.canIntersectRectangleAt.withExtent..st
+++ b/source/GM-Core.package/GMCircleCollisionDetectionShape.class/instance/circleAt.withRadius.canIntersectRectangleAt.withExtent..st
@@ -1,4 +1,4 @@
 utility
-circleAt: circlePos withRadius: radius canIntersectRectangleAt: rectanglePos withExtent: extent
-	^ (self absDistanceFrom: circlePos to: rectanglePos) x < (extent x / 2 + radius) and:
-		[(self absDistanceFrom: circlePos to: rectanglePos) y < (extent y / 2 + radius)]
\ No newline at end of file
+circleAt: circlePos withRadius: circleRadius canIntersectRectangleAt: rectanglePos withExtent: rectangleExtent
+	^ (self absDistanceFrom: circlePos to: rectanglePos) x < (rectangleExtent x / 2 + circleRadius) and:
+		[(self absDistanceFrom: circlePos to: rectanglePos) y < (rectangleExtent y / 2 + circleRadius)]
\ No newline at end of file
diff --git a/source/GM-Core.package/GMCircleCollisionDetectionShape.class/instance/circleAt.withRadius.isCollidingWithRectangleAt.withExtent..st b/source/GM-Core.package/GMCircleCollisionDetectionShape.class/instance/circleAt.withRadius.isCollidingWithRectangleAt.withExtent..st
index ce913682..d8d0f51b 100644
--- a/source/GM-Core.package/GMCircleCollisionDetectionShape.class/instance/circleAt.withRadius.isCollidingWithRectangleAt.withExtent..st
+++ b/source/GM-Core.package/GMCircleCollisionDetectionShape.class/instance/circleAt.withRadius.isCollidingWithRectangleAt.withExtent..st
@@ -1,12 +1,12 @@
 utility
-circleAt: circlePos withRadius: radius isCollidingWithRectangleAt: rectanglePos withExtent: extent
+circleAt: circlePos withRadius: circleRadius isCollidingWithRectangleAt: rectanglePos withExtent: rectangleExtent
 	(self circleAt: circlePos 
-		withRadius: radius 
+		withRadius: circleRadius 
 		canIntersectRectangleAt: rectanglePos 
-		withExtent: extent)
+		withExtent: rectangleExtent)
 		ifFalse: [^ false].
 	(self circleAt: circlePos
 		mustIntersectRectangleAt: rectanglePos 
-		withExtent: extent)
+		withExtent: rectangleExtent)
 		ifTrue: [^ true].
-	^ self circleAt: circlePos withRadius: radius isIntersectingRectangleAt: rectanglePos withExtent: extent
\ No newline at end of file
+	^ self circleAt: circlePos withRadius: circleRadius isIntersectingRectangleAt: rectanglePos withExtent: rectangleExtent
\ No newline at end of file
diff --git a/source/GM-Core.package/GMCircleCollisionDetectionShape.class/instance/circleAt.withRadius.isIntersectingRectangleAt.withExtent..st b/source/GM-Core.package/GMCircleCollisionDetectionShape.class/instance/circleAt.withRadius.isIntersectingRectangleAt.withExtent..st
index 7ea4819a..3eb3a427 100644
--- a/source/GM-Core.package/GMCircleCollisionDetectionShape.class/instance/circleAt.withRadius.isIntersectingRectangleAt.withExtent..st
+++ b/source/GM-Core.package/GMCircleCollisionDetectionShape.class/instance/circleAt.withRadius.isIntersectingRectangleAt.withExtent..st
@@ -1,6 +1,6 @@
 utility
-circleAt: circlePos withRadius: radius isIntersectingRectangleAt: rectanglePos withExtent: extent
+circleAt: circlePos withRadius: circleRadius isIntersectingRectangleAt: rectanglePos withExtent: rectangleExtent
 	"Because we calculated circleDistance we can now imagine the rectangle center in 0 @ 0, 
 	the circle center at circleDistance and the rectangle corner at (aMorph extent)."
-	^ ((self absDistanceFrom: circlePos to: rectanglePos) squaredDistanceTo: extent / 2) <= 
-		radius squared
\ No newline at end of file
+	^ ((self absDistanceFrom: circlePos to: rectanglePos) squaredDistanceTo: rectangleExtent / 2) <= 
+		circleRadius squared
\ No newline at end of file
diff --git a/source/GM-Core.package/GMCircleCollisionDetectionShape.class/methodProperties.json b/source/GM-Core.package/GMCircleCollisionDetectionShape.class/methodProperties.json
index 5c57e0c9..61f1eeaf 100644
--- a/source/GM-Core.package/GMCircleCollisionDetectionShape.class/methodProperties.json
+++ b/source/GM-Core.package/GMCircleCollisionDetectionShape.class/methodProperties.json
@@ -3,10 +3,10 @@
 		 },
 	"instance" : {
 		"absDistanceFrom:to:" : "brh 7/25/2018 22:43",
-		"circleAt:mustIntersectRectangleAt:withExtent:" : "brh 7/25/2018 22:43",
-		"circleAt:withRadius:canIntersectRectangleAt:withExtent:" : "brh 7/25/2018 22:43",
-		"circleAt:withRadius:isCollidingWithRectangleAt:withExtent:" : "brh 7/25/2018 22:44",
-		"circleAt:withRadius:isIntersectingRectangleAt:withExtent:" : "brh 7/25/2018 22:43",
+		"circleAt:mustIntersectRectangleAt:withExtent:" : "AZ 7/25/2018 23:01",
+		"circleAt:withRadius:canIntersectRectangleAt:withExtent:" : "AZ 7/25/2018 23:02",
+		"circleAt:withRadius:isCollidingWithRectangleAt:withExtent:" : "AZ 7/25/2018 23:03",
+		"circleAt:withRadius:isIntersectingRectangleAt:withExtent:" : "AZ 7/25/2018 23:03",
 		"isCollidingWith:" : "TP 7/10/2018 16:20",
 		"isCollidingWithCircle:" : "brh 7/24/2018 20:48",
 		"isCollidingWithRectangle:" : "brh 7/25/2018 22:23",