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Head First 2D Geometry by Dawn Griffiths, Stray

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regular polygons
What do YOU want to try?
We could search some
sp
ecific f
ormul
as on
the Internet.
We could do some
accura
te cons
truction,
count s
haded squar
es,
and compare p
erimeter
t
o ar
ea roughly.
W
e could draw a circle tha
t’s part
inside and part outside the nonagon
t
o get a pr
etty good es
tima
te.
you are here 4 301

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