N/A. Français : Fig. 8. — Égalité de la somme des angles d’un triangle a 180 degré on deux angles droits. 1 March 2012. François Arago  (1786–1853)     Alternative names Francois Arago Description French astronomer, mathematician, physicist, politician, scientist and university teacher Date of birth/death 26 February 1786 2 October 1853 Location of birth/death Estagel Paris Work location Paris Authority control : Q154353 VIAF:64023378 ISNI:0000 0001 2280 9159 LCCN:n50052497 NLA:35263984 GND:118847767 WorldCat 117 ARAGO Francois Astronomie Populaire T1 page 0048 Fig8

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