===== Rotate image =====
To rotate image use command **Rotate** from the [[меню_математика|Mathematics menu]] or the button

{{:en:processing:rotate_1_en.jpg|}}

A dialog box will appear, one can select from three types of rotation in it:
  - Clockwise by 90 degrees;
  - Counter-clockwise by 90 degrees;
  - Rotate by an arbitrary angle specified by the user.

{{:en:processing:rotate_2_en.jpg|}}