diff --git a/vcg/complex/algorithms/bitquad_support.h b/vcg/complex/algorithms/bitquad_support.h
index 3e82b644..553dc127 100644
--- a/vcg/complex/algorithms/bitquad_support.h
+++ b/vcg/complex/algorithms/bitquad_support.h
@@ -204,7 +204,7 @@ static void FlipDiag(FaceType &f){
 
 
 // given a vertex (i.e. a face and a wedge), 
-// this function tells us how the totale edge lenght around a vertex would change
+// this function tells us how the totale edge length around a vertex would change
 // if that vertex is rotated
 static ScalarType EdgeLenghtVariationIfVertexRotated(const FaceType &f, int w0)
 {
@@ -239,7 +239,7 @@ static ScalarType EdgeLenghtVariationIfVertexRotated(const FaceType &f, int w0)
 }
 
 // given a vertex (i.e. a face and a wedge), 
-// this function tells us how the totale edge lenght around a vertex would change
+// this function tells us how the totale edge length around a vertex would change
 // if that vertex is rotated
 static ScalarType QuadQualityVariationIfVertexRotated(const FaceType &f, int w0)
 {
diff --git a/vcg/complex/algorithms/clustering.h b/vcg/complex/algorithms/clustering.h
index 642b3efb..b1c396cc 100644
--- a/vcg/complex/algorithms/clustering.h
+++ b/vcg/complex/algorithms/clustering.h
@@ -270,13 +270,13 @@ class Clustering
   // The init function Take two parameters
   // _size is the approximate total number of cells composing the grid surrounding the objects (usually a large number)
   //       eg _size==1.000.000 means a 100x100x100 grid
-  // _cellsize is the absolute lenght of the edge of the grid cell.
+  // _cellsize is the absolute length of the edge of the grid cell.
   //       eg _cellsize==2.0 means that all the vertexes in a 2.0x2.0x2.0 cell are clustered togheter
 
   // Notes:
   // _size is used only if the cell edge IS zero.
   // _cellsize gives you an absolute measure of the maximum error introduced
-  //           during the simplification (e.g. half of the cell edge lenght)
+  //           during the simplification (e.g. half of the cell edge length)
 
 
   void Init(Box3<ScalarType> _mbb, int _size, ScalarType _cellsize=0)
diff --git a/vcg/space/intersection2.h b/vcg/space/intersection2.h
index 366287d0..dc108045 100644
--- a/vcg/space/intersection2.h
+++ b/vcg/space/intersection2.h
@@ -130,11 +130,11 @@ namespace vcg {
 		if(!RayLineIntersection<SCALAR_TYPE>(line2,r,p_inters))
 			return false;
 		///then test if intersection point is nearest 
-		///to both extremes then lenght of the segment 
+		///to both extremes then length of the segment 
 		SCALAR_TYPE d0=(seg.P1()-p_inters).Norm();
 		SCALAR_TYPE d1=(seg.P0()-p_inters).Norm();
-		SCALAR_TYPE lenght=(seg.P0()-seg.P1()).Norm();
-		return ((d0<lenght)&&(d1<lenght));
+		SCALAR_TYPE length=(seg.P0()-seg.P1()).Norm();
+		return ((d0<length)&&(d1<length));
 	}
 
 	/// interseciton between point and triangle
@@ -152,11 +152,11 @@ namespace vcg {
 		if(!LineLineIntersection(line,line2,p_inters))
 			return false;
 		///then test if intersection point is nearest 
-		///to both extremes then lenght of the segment 
+		///to both extremes then length of the segment 
 		SCALAR_TYPE d0=(seg.P1()-p_inters).Norm();
 		SCALAR_TYPE d1=(seg.P0()-p_inters).Norm();
-		SCALAR_TYPE lenght=(seg.P0()-seg.P1()).Norm();
-		return ((d0<lenght)&&(d1<lenght));
+		SCALAR_TYPE length=(seg.P0()-seg.P1()).Norm();
+		return ((d0<length)&&(d1<length));
 	}
 
 	/// interseciton between point and triangle
diff --git a/vcg/space/intersection3.h b/vcg/space/intersection3.h
index 3a9e85cc..74f5b974 100644
--- a/vcg/space/intersection3.h
+++ b/vcg/space/intersection3.h
@@ -590,13 +590,13 @@ bool IntersectionSegmentTriangle( const vcg::Segment3<ScalarType> & seg,
 	//first set both directions of ray
   vcg::Line3<ScalarType> line;
 	vcg::Point3<ScalarType> dir;
-	ScalarType lenght=seg.Length();
+	ScalarType length=seg.Length();
 	dir=(seg.P1()-seg.P0());
 	dir.Normalize();
   line.Set(seg.P0(),dir);
 	ScalarType orig_dist;
   if(IntersectionLineTriangle<ScalarType>(line,vert0,vert1,vert2,orig_dist,a,b))
-    return (orig_dist<=lenght);
+    return (orig_dist<=length);
   return false;
 }
 /**
diff --git a/vcg/space/segment3.h b/vcg/space/segment3.h
index 57f258a0..de550aee 100644
--- a/vcg/space/segment3.h
+++ b/vcg/space/segment3.h
@@ -127,7 +127,7 @@ public:
 		/// returns segment length
 	ScalarType Length() const
 	{ return (_p0 - _p1).Norm(); }
-		/// return segment squared lenght
+		/// return segment squared length
 	ScalarType SquaredLength() const
 	{ return (_p0 - _p1).SquaredNorm(); }
 	  /// flips: a-b becomes b-a