pentagon=5 sides
eezeeer if yuze Regular pentagon...all sides & angels the same
NE regular shape with 4 or more sides...yukan draw lines from 1+ korners tu
other korners tu sho the triangels that add up tu the start thang.
with regular pentagon...draw it with horizontal bottom. Then yu hav point at top.
Vertikal line from mid av botton go thru top point & also thru senter av pentagon.
Pik 1 point & draw 2 lines from it tu other points. Zampel, start at left korner.
Draw 1 diagonal tu bottom-rite korner; other line tu rite-most korner.
Exactlee 2 diangonals. This giv yu 3 triangels.
Serkels: yukan draw serkels inside & outside the pentagon. Senter av both
serkels=senter av pentagon.
Idea is...Greeks around 300bc approximate serkel with regular polygons.
As number sides inkreez, approx get kloeser. Then em kalkulate value av pi
from the geometry av the polygon.