Art question..plz help ASAP

Question

what is the significance of mirrors in certain paintings like the arnolfini wedding portrait, las meinas, and the werl altarpiece?

a general idea of why certain artists used mirrors is just fine and more identifications of other paintings with mirrors to look at are welcome

thanks for the help

Answer 1

Mostly to show you more surroundings or to grant you a smaller view from a different perspective.