The fundamental of the H series is one..................only the square root of 2.................two being the first number of the prime fundamental...........is less than one half pi........or 180s of the 1/2 radius circle........the next square root of the pf is the square root of 3.....

square root(3) = 

1.73205080757

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More info

Square root of 3 - Wikipedia

https://en.wikipedia.org/wiki/Square_root_of_3

The square root of 3 is the positive real number that, when multiplied by itself, gives the number 3. It is more precisely called the principal square root of 3, ...

Decimal‎: ‎1.7320508075688772935…

Hexadecimal‎: ‎1.BB67AE8584CAA73B…