diff --git a/web/app/arc.js b/web/app/arc.js
index db35bb46..5b0dff65 100644
--- a/web/app/arc.js
+++ b/web/app/arc.js
@@ -56,9 +56,8 @@ TCAD.TWO.Arc.prototype.drawImpl = function(ctx, scale) {
   var r = this.radiusForDrawing();
   var startAngle = Math.atan2(this.a.y - this.c.y, this.a.x - this.c.x);
   var endAngle;
-  if ( this.a.isCoincidentTo(this.b) || 
-      (TCAD.utils.areEqual(this.a.x, this.b.x, TCAD.utils.TOLERANCE) && 
-       TCAD.utils.areEqual(this.a.y, this.b.y, TCAD.utils.TOLERANCE))) {
+  if (TCAD.utils.areEqual(this.a.x, this.b.x, TCAD.TOLERANCE) && 
+      TCAD.utils.areEqual(this.a.y, this.b.y, TCAD.TOLERANCE)) {
     endAngle = startAngle + 2 * Math.PI;
   } else {
     endAngle = Math.atan2(this.b.y - this.c.y, this.b.x - this.c.x);
diff --git a/web/app/canvas.js b/web/app/canvas.js
index 84a0caa0..0f77aac1 100644
--- a/web/app/canvas.js
+++ b/web/app/canvas.js
@@ -292,16 +292,6 @@ TCAD.TWO.SketchObject.prototype.visit = function(onlyVisible, h) {
   return h(this);
 };
 
-TCAD.TWO.SketchObject.prototype.isCoincidentTo = function(other) {
-  for (var i = 0; i < this.linked.length; i++) {
-    var obj = this.linked[i];
-    if (obj.id === other.id) {
-      return true;        
-    }
-  }
-  return false;
-};
-
 TCAD.TWO.SketchObject.prototype._translate = function(dx, dy, translated) {
   translated[this.id] = 'x';
   for (var i = 0; i < this.linked.length; ++i) {