Why are objects in the side-view mirror closer than they appear?

quot;Objects in mirror are closer than they appear." That little line appears so often and in so many contexts, it's almost lost all meaning -- but why is it there, and what does physics have to do with it?

A mirror on the side of a car states a warning: Objects in mirror

Are objects in a mirror closer than they appear? - Quora

Which mirror is used to see backwards while driving? - Quora

Why objects in mirror are closer than they appear

objects in mirror are closer than they appear in french on car

Why do mirrors reverse left and right but not top and bottom? - Quora

What mirror should we look at often while driving a car, left, right, or rear view? - Quora

79 Objects Mirror Closer Than They Appear Images, Stock Photos, 3D

Rear View Mirror with Warning Text Objects in Mirror are Closer

DEDC

Morris Classic Concepts mirrors installed, Page 4

Objects In Mirror May Be Closer Than They Appear – Aikido

Why 'Objects In The Mirror Are Closer Than They Appear'? » Science ABC

Why do mirrors reverse left and right but not top and bottom? - Quora