+Angle = geompy.GetAngleVectors(OX, OXY, True)
+
+print "\nAngle between vectors OX and OXY = ", Angle
+if math.fabs(Angle - 45.0) > 1e-05:
+ print " Error: returned angle is", Angle, "while must be 45.0"
+ pass
+
+Angle = geompy.GetAngleRadiansVectors(OX, OXY, False)
+
+print "\nBig angle between vectors OX and OXY in radians = ", Angle
+if math.fabs(Angle - math.pi*7./4.) > 1e-05:
+ print " Error: returned angle is", Angle, "while must be 7*pi/4"
+ pass
+