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diff --git a/src/SketchPlugin/doc/angleFeature.rst b/src/SketchPlugin/doc/angleFeature.rst
index 004f80781..1a552c54d 100644
--- a/src/SketchPlugin/doc/angleFeature.rst
+++ b/src/SketchPlugin/doc/angleFeature.rst
@@ -1,10 +1,75 @@
+.. |angle_constr.icon|    image:: images/angle_constr.png
 
 Angle constraint
 ================
 
+Angle constraint fixes the angle between two lines.
 
-.. image:: images/Angle.png
-  :align: center
+| Angle between two lines is seen as an angle between two vectors.
+| Each line is treated as a vector with start and end points equal to those of the line.
 
-.. centered::
-  Create an angle constraint
+To create an Angle constraint in the active Sketch:
+
+#. select in the Main Menu *Sketch - > Angle* item  or
+#. click |angle_constr.icon| **Angle** button in Sketch toolbar:
+
+Property panel:
+
+.. figure:: images/Angle_panel.png
+   :align: center
+
+.. |angle_direct| image:: images/angle_direct.png
+.. |angle_complement| image:: images/angle_complementary.png
+.. |angle_backward| image:: images/angle_backward.png
+.. |loc_left| image:: images/location_left.png
+.. |loc_auto| image:: images/location_automatic.png
+.. |loc_right| image:: images/location_right.png
+
+Input fields:
+
+- **Line 1** is the first line selected in the view;
+- **Line 2** is the second line selected in the view;
+- **Value** is an angle between the lines, can be modified to set the desirable value;
+- **Angle type** is a type of angle measurement:
+   | |angle_direct| **Direct** is the least angle between two lines;
+   | |angle_complement| **Complementary** is 180°- Direct angle between two lines;
+   | |angle_backward| **Backward** is 360°- Direct angle between two lines.
+- **Text location** is the position of the angle value label relatively to the angle line (in the view):
+   | |loc_left| **Left** inserts text to the left of the angle line;
+   | |loc_auto| **Automatic** inserts text it the middle of the angle line if it has enough length, otherwise - to the left;
+   | |loc_right| **Right** inserts text to the right of the angle line.
+
+When both lines are selected, the angle value is displayed in the property panel and in the view.
+
+When creating the constraint, after selection of two lines at the first time:
+
+- drag the angle presentation in the view to the desired position and click once;
+- set desirable angle value in the input field in the view and press **Enter** or just press **Enter** to keep the current angle
+
+.. figure:: images/Angle_field_view.png
+   :align: center
+
+   Angle input in the view
+
+**TUI Commands**:
+
+.. py:function:: Sketch_1.setAngle(Line1, Line2, Value)
+.. py:function:: Sketch_1.setAngleComplementary(Line1, Line2, Value)
+.. py:function:: Sketch_1.setAngleBackward(Line1, Line2, Value)
+
+    :param object: Line 1.
+    :param object: Line 2.
+    :param real: Value.
+    :return: Result object.
+
+Result
+""""""
+
+Created Angle appears in the view.
+
+.. figure:: images/Angle_res.png
+   :align: center
+
+   Angle created
+
+**See Also** a sample TUI Script of :ref:`tui_create_angle` operation.