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Tópicos de Geometria - CMUP

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p 2 = R(p 1 , 2π/n)(p) outro <strong>de</strong>sses centros (ver as figuras seguintes)<br />

p p 1 p<br />

p 1<br />

a<br />

p 3<br />

b<br />

p 2<br />

p 2<br />

b<br />

Ora d(p 2 ,p) = 2sin(π/n)d(p, p 1 ) eportantoseriad(p 2 ,p) < d(p, p 1 ) se fosse n > 6;<br />

consi<strong>de</strong>rando agora p 3 = R(p 2 , 2π/n)(p 1 ) verifica-se que se n =5(figura da direita, com<br />

b =2π/5) seriad(p 3 ,p)

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