Winkel

(1)   ${\displaystyle \varphi ={\frac {360^{0}}{n}}={\frac {360^{0}}{6}}=60^{0}}$   Mittelpunktswinkel

(2)   ${\displaystyle \chi =180^{0}-\varphi =120^{0}}$   Winkel der Ecken

Strecken

(3)   ${\displaystyle a=r_{o}\,}$   Seitenlänge

(4)  ${\displaystyle r_{i}=a{\frac {\sqrt {3}}{2}}}$   Inkreisradius

(5)  ${\displaystyle U=6a\,}$

Fläche

(6)  ${\displaystyle A=3a^{2}{\frac {\sqrt {3}}{2}}}$

(7)  ${\displaystyle A=2r_{i}^{2}{\sqrt {3}}}$

Sonstiges

(8)  ${\displaystyle {\frac {r_{o}}{r_{i}}}={\frac {2}{\sqrt {3}}}}$

(9)  ${\displaystyle {\frac {A}{A_{c_{o}}}}={\frac {3{\sqrt {3}}}{2\pi }}\approx 0,827A_{c_{o}}}$