diff --git a/CityDoctorParent/CityDoctorEdge/src/main/java/de/hft/stuttgart/citydoctor2/edge/Global.java b/CityDoctorParent/CityDoctorEdge/src/main/java/de/hft/stuttgart/citydoctor2/edge/Global.java
index b6c054ea623e7223244421078a578c703b6383ac..1d5762d5c8867b57ac2dba800428f80dd963c6ac 100644
--- a/CityDoctorParent/CityDoctorEdge/src/main/java/de/hft/stuttgart/citydoctor2/edge/Global.java
+++ b/CityDoctorParent/CityDoctorEdge/src/main/java/de/hft/stuttgart/citydoctor2/edge/Global.java
@@ -25,7 +25,7 @@ public class Global {
 	
 	private static final double DBL_EPSILON = 2.2204460492503131e-16;
 
-	private static final double M_ZERO_ANGLE_COSINUS = 1.0e-9;
+	private static final double M_ZERO_ANGLE_COSINE = 1.0e-9;
 	private static final double M_TOL_VECTORS_PARALLEL = 1e-9;
 	private static final double M_HIGH_ACCURACY_TOL = DBL_EPSILON * 5;
 	private static final double M_TOL_POINTS_EQUAL = 1e-3;
@@ -33,7 +33,9 @@ public class Global {
 	private Global() {
 	}
 	
-	public static double getTolPointsEquals() { return M_TOL_POINTS_EQUAL; }
+	public static double getTolPointsEquals() {
+		return M_TOL_POINTS_EQUAL;
+	}
 
 	public static double getHighAccuracyTolerance() {
 		return M_HIGH_ACCURACY_TOL;
@@ -49,7 +51,7 @@ public class Global {
 		};
 	}
 
-	public static double getZeroAngleCosinus() { return M_ZERO_ANGLE_COSINUS; }
+	public static double getZeroAngleCosine() { return M_ZERO_ANGLE_COSINE; }
 
 	public static double getTolVectorsParallel() {
 		return M_TOL_VECTORS_PARALLEL;
diff --git a/CityDoctorParent/CityDoctorEdge/src/main/java/de/hft/stuttgart/citydoctor2/edge/GmStraight.java b/CityDoctorParent/CityDoctorEdge/src/main/java/de/hft/stuttgart/citydoctor2/edge/GmStraight.java
index 99676c03e5b9de047a22b5c65f66aa7348f3dca0..49f533960ead25a1f99a430547d5aab88a89237a 100644
--- a/CityDoctorParent/CityDoctorEdge/src/main/java/de/hft/stuttgart/citydoctor2/edge/GmStraight.java
+++ b/CityDoctorParent/CityDoctorEdge/src/main/java/de/hft/stuttgart/citydoctor2/edge/GmStraight.java
@@ -55,7 +55,7 @@ public class GmStraight {
 		return dir;
 	}
 
-	public boolean isColinear(GmStraight straight2, double angleEpsilon, double epsilon) {
+	public boolean isCollinear(GmStraight straight2, double angleEpsilon, double epsilon) {
 		UnitVector3d rDir1 = getDir();
 		UnitVector3d rDir2 = straight2.getDir();
 
diff --git a/CityDoctorParent/CityDoctorEdge/src/main/java/de/hft/stuttgart/citydoctor2/edge/GmStraight2d.java b/CityDoctorParent/CityDoctorEdge/src/main/java/de/hft/stuttgart/citydoctor2/edge/GmStraight2d.java
index ebb1239356506fbb304fc2830299816f59f12ff4..7371efa59b23fff0ebf88af2f6d2328a5006cc65 100644
--- a/CityDoctorParent/CityDoctorEdge/src/main/java/de/hft/stuttgart/citydoctor2/edge/GmStraight2d.java
+++ b/CityDoctorParent/CityDoctorEdge/src/main/java/de/hft/stuttgart/citydoctor2/edge/GmStraight2d.java
@@ -60,7 +60,7 @@ public class GmStraight2d {
 		Vector2d r2Perpendicular = r2.getPerpendicularVector();
 		double diff = r1.dot(r2Perpendicular);
 
-		if (Math.abs(diff) < Global.getZeroAngleCosinus()) {
+		if (Math.abs(diff) < Global.getZeroAngleCosine()) {
 			return GmStraight2dIntersectionResult.parallel(this, other);
 		} else {
 			double invR1DotPerpR2 = 1.0 / diff;
diff --git a/CityDoctorParent/CityDoctorEdge/src/main/java/de/hft/stuttgart/citydoctor2/edge/IntersectPlanarPolygons.java b/CityDoctorParent/CityDoctorEdge/src/main/java/de/hft/stuttgart/citydoctor2/edge/IntersectPlanarPolygons.java
index 1baece193df0446e27e2d1847d3580dc6ec8e065..a013a05de40528f2e909a02413139e787666412a 100644
--- a/CityDoctorParent/CityDoctorEdge/src/main/java/de/hft/stuttgart/citydoctor2/edge/IntersectPlanarPolygons.java
+++ b/CityDoctorParent/CityDoctorEdge/src/main/java/de/hft/stuttgart/citydoctor2/edge/IntersectPlanarPolygons.java
@@ -256,7 +256,7 @@ public class IntersectPlanarPolygons {
 			// check if the straight of the HalfEdge is collinear to the intersection
 			// straight; this might result in an embedded edge intersection result
 			// TODO MW: really needed? this check is also made some lines above
-			if (heStraight.isColinear(intersectingStraight, angleEpsilon, epsilon)) {
+			if (heStraight.isCollinear(intersectingStraight, angleEpsilon, epsilon)) {
 				currHESharesAPntWithTheOtherPolygon = false;
 			}
 
@@ -276,7 +276,7 @@ public class IntersectPlanarPolygons {
 				Vector2d diffVec = heStraight2d.getOrigin().minus(intersectingStraight2d.getOrigin());
 				double diffVecDotPerpDir = diffVec.dot(dir.getPerpendicularVector());
 
-				if (Math.abs(diffVecDotPerpDir) < Global.getZeroAngleCosinus()) {
+				if (Math.abs(diffVecDotPerpDir) < Global.getZeroAngleCosine()) {
 					// Straights are identical
 					Point2d p1 = heStraight2d.getOrigin();
 					Point2d p2 = heStraight2d.getTarget();