Sisagon

Sisagon is figura har sisa gono ji sisa comen.

Meter
Moyun gono de pinpan sisagon hare 120° ji oto maxuscu cel 720°.

Peryaje
Peryaje de pinpan sisagon har comenli lungoje a is:
 * $$\text{A} = \frac{3\sqrt{3}}{2}a^2.$$