Index: trunk/test/unit/org/openstreetmap/josm/tools/GeometryTest.java
===================================================================
--- trunk/test/unit/org/openstreetmap/josm/tools/GeometryTest.java	(revision 13659)
+++ trunk/test/unit/org/openstreetmap/josm/tools/GeometryTest.java	(revision 13670)
@@ -1,4 +1,6 @@
 // License: GPL. For details, see LICENSE file.
 package org.openstreetmap.josm.tools;
+
+import static org.junit.Assert.assertEquals;
 
 import java.io.FileInputStream;
@@ -10,5 +12,7 @@
 import org.openstreetmap.josm.TestUtils;
 import org.openstreetmap.josm.data.coor.EastNorth;
+import org.openstreetmap.josm.data.coor.LatLon;
 import org.openstreetmap.josm.data.osm.DataSet;
+import org.openstreetmap.josm.data.osm.Node;
 import org.openstreetmap.josm.data.osm.Relation;
 import org.openstreetmap.josm.data.osm.Way;
@@ -109,3 +113,35 @@
         }
     }
+
+    /**
+     * Test of {@link Geometry#getNormalizedAngleInDegrees(double)} method.
+     */
+    @Test
+    public void testRightAngle() {
+        Node n1 = new Node(1);
+        Node n2 = new Node(2);
+        Node n3 = new Node(3);
+        n1.setCoor(new LatLon(10.22873540462851, 6.169719398316592));
+        n2.setCoor(new LatLon(10.229332494162811, 6.16978130985785));
+        n3.setCoor(new LatLon(10.22924937004949, 6.17060908367496));
+
+        double angle = Geometry.getNormalizedAngleInDegrees(Geometry.getCornerAngle(n1.getEastNorth(),
+                n2.getEastNorth(), n3.getEastNorth()));
+        assertEquals(90, angle, 1e-8);
+        angle = Geometry.getNormalizedAngleInDegrees(Geometry.getCornerAngle(n1.getEastNorth(),
+                n2.getEastNorth(), n1.getEastNorth()));
+        assertEquals(0, angle, 1e-8);
+
+        n1.setCoor(new LatLon(10.2295011, 6.1693106));
+        n2.setCoor(new LatLon(10.2294958, 6.16930635));
+        n3.setCoor(new LatLon(10.2294895, 6.1693039));
+
+        angle = Geometry.getNormalizedAngleInDegrees(Geometry.getCornerAngle(n1.getEastNorth(),
+                n2.getEastNorth(), n3.getEastNorth()));
+        assertEquals(162.66381817961337, angle, 1e-5);
+
+        angle = Geometry.getNormalizedAngleInDegrees(Geometry.getCornerAngle(n3.getEastNorth(),
+                n2.getEastNorth(), n1.getEastNorth()));
+        assertEquals(162.66381817961337, angle, 1e-5);
+    }
 }