The square root of 2

The square root of 2 is a number that, when multiplied by itself, equals 2. It’s approximately 1.414. This number is special because it cannot be written as a simple fraction and is an example of an irrational number. The square root of 2 often appears in geometry, especially when calculating the diagonal of a square with sides of length 1. It reflects a fundamental relationship in mathematics about the ratio between the diagonal and side of a square, demonstrating how certain distances involve more complex, non-repeating decimal values.