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Subject: =?UTF-8?Q?Probl=C3=A8me_de_maths?=
From: Badi Megueni-Tani <badtanimt@gmail.com>
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bonjour,=20
da=20

On consid=C3=A8re un quadrilat=C3=A8re de l=E2=80=99espace tangent =C3=A0 u=
ne sph=C3=A8re. Montrer que les points de tangence sont coplanaires.