Vector.angle -> Vector.angleBetween.

src/main/java/pythagoras/f/AbstractVector.java

@@ -38,7 +38,7 @@ public abstract class AbstractVector implements IVector
     }
 
     @Override // from interface IVector
-    public float angle (IVector other) {
+    public float angleBetween (IVector other) {
         float cos = dot(other) / (length() * other.length());
         return cos >= 1f ? 0f : FloatMath.acos(cos);
     }

src/main/java/pythagoras/f/IVector.java

@@ -35,7 +35,7 @@ public interface IVector
     Vector normalize (Vector result);
 
     /** Returns the angle between this vector and the specified other vector. */
-    float angle (IVector other);
+    float angleBetween (IVector other);
 
     /** Returns the direction of a vector pointing from this point to the specified other point. */
     float direction (IVector other);