Quantas diagonais tem o poligono regular cujo o ai mede 135°
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ai=





n=8 (octógono)
Vamos achar as diagonais



d=20
O polígono é o octógono e tem 20 diagonais.
n=8 (octógono)
Vamos achar as diagonais
d=20
O polígono é o octógono e tem 20 diagonais.
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