In keynote what are master slides used for?

Answer:
Master slides are the format of slides. Choosing a master slide lets you choose a default setup for that particular slide.
For example, one master slide may contain a title and body of text. Another may contain a title, body of text, and a spot for an image.

Master slides make it easier to set up slides without resizing text boxes and images.
First answer by Abobeck11. Last edit by Abobeck11. Contributor trust: 1 [recommend contributor recommended]. Question popularity: 1 [recommend question].