Mirror writing

In your book, Maths Mela (Chapter 11), there is an ambulance. On its front, the word AMBULANCE is written back to front: the letters go the other way, and each letter is flipped. Why? A driver in front of the ambulance sees it in the rear-view mirror. A mirror turns writing back to front, so the back-to-front word shows up the right way round in the mirror! The driver can read AMBULANCE and make way.

A mirror beside a word turns it back to front. A mirror above or below a word turns it upside down. So we can tell where the mirror was by looking at how a word is written.

In the book, a girl writes CAT upside down: the letters A and T stand on their heads (the letter C looks the same either way up). This is what a mirror above or below the word shows. The book also prints TAP and HEN back to front, which is what a mirror beside them shows. And CAN is printed upside down, like CAT, so it needs a mirror above or below.

Some words look the same in a mirror beside them. WOW is one: the letter W and the letter O are the same on the left and the right, and W-O-W reads the same backwards.