Square Root of Two
√2
Type it
| Unicode | U+221A U+0032 | |
|---|---|---|
| LaTeX | \sqrt{2} | |
| HTML entity | √2 | |
| Character | √2 |
Meaning
The positive number whose square is 2, approximately 1.41421. It is the length of a unit square's diagonal and was the first number shown to be irrational. Compare with Square Root and Pi.
How to read it
(√2)² = 2
is read “root two, squared, equals two”.