Números figurados
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![Page 1: Números figurados](https://reader034.fdocuments.net/reader034/viewer/2022052218/55939eb01a28ab2c018b46e1/html5/thumbnails/1.jpg)
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Os Pitagóricos representavam cada unidade por um ponto e com os pontos formavam figuras que representavam
números.
![Page 3: Números figurados](https://reader034.fdocuments.net/reader034/viewer/2022052218/55939eb01a28ab2c018b46e1/html5/thumbnails/3.jpg)
De acordo com as figuras obtidas chamavam de
números triangulares, números
quadrados,
números pentagonais,...
E com estes números podemos formar
sequências!
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A soma de dois números triangulares consecutivos é um quadrado perfeito.
Os números 1, 36, 1225, 41616, 1413721,
48024900 são os números triangulares quadrados, isto
é, os números que são simultaneamente triangulares e
quadrados.
![Page 15: Números figurados](https://reader034.fdocuments.net/reader034/viewer/2022052218/55939eb01a28ab2c018b46e1/html5/thumbnails/15.jpg)
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