How do I crop diagonally in Impress, please see example.
Edited to make image visible. LeroyG
Edit: Send to back the picture (menu Format - Arrange). Create a rectangle, rotate it, move it in front of the picture. Select the picture and the rectangle, and secondary click, Shapes - Subtract.
Original answer based in Draw (my error):
Send to back the picture (menu Shape - Arrange). Create a rectangle, rotate it, move it in front of the picture. Select the picture and the rectangle, and choose menu Shape - Subtract.
Tested with LibreOffice 6.4.7.2 (x86); OS: Windows 6.1.
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