hold your hands out in front of you, with the thumbs and index fingers extended. The one that looks like an L is your left hand, and therefore tells you which way is left.

Now turn your hands over. The one that looks like an L is your right hand.

Left and right are rotational concepts, unlike up and down. See why mirrors reverse LEFT and RIGHT, but not UP and DOWN.

Log in or registerto write something here or to contact authors.