Carrés

11^2= :: 121

12^2= :: 144

13^2= :: 169

14^2= :: 196

15^2= :: 225

16^2= :: 256

17^2= :: 289

Constantes

\sqrt{ 2 } \approx :: 1.414'21'35

\sqrt{ 3 } \approx :: 1.7320

\sqrt{ 5 }\approx :: 2.236

e \approx :: 2.718281828459045

\tan\left( \frac{\pi}{6} \right) :: \dfrac{\sqrt{ 3 }}{3} = \dfrac{1}{\sqrt{ 3 }}

\tan\left( \frac{\pi}{3} \right) :: \sqrt{ 3 }