Geometry

The word 'geometry' comes from the Greek words for 'earth' and 'measure'.

Multiply by 1000

You've probably heard of a million, a billion and a trillion, but what comes next?

Quadrillion (15 zeroes)

Quintillion (18 zeroes)

Sextillion (21 zeroes)

Septillion (24 zeroes)

Octillion (27 zeroes)

Nonillion (30 zeroes)

Decillion (33 zeroes)

A triangle with sides of length 3cm, 4cm and 5cm has an area of 6cm².

'Eleven plus two' and 'twelve plus one' both equal 13, and both have the same 13 letters.

There are three types of people in the world…those who can count, and those who can’t.

The word mathematics comes from the Ancient Greek máthēma (μάθημα), meaning "that which is learnt"

Every snowflake has rotational symmetry of order 6.

The sun's width is roughly 400 times larger than that of the moon, but the moon is about 400 times closer to Earth.

This is why they appear about the same size in the sky, and why solar eclipses can occur.