You can duplicate images added to a slide.

To copy an image:         

  1. Select one or more images on the slide.

    To select several items, click them while holding down the Shift or Ctrl button or select the area with the objects.

  2. Right-click the selected objects and choose Copy from the drop-down menu.

The action will be applied to the selected images. Right-click again, and click Paste in the drop-down menu, and the copied image will be pasted nearby.