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luni, 30 iunie 2025

aops, https://artofproblemsolving.com/community/c6t48f6h3599961_prove_that_two_angles_are_equal_on_a_rectangle

 


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Mi Prepa, https://www.facebook.com/photo?fbid=1427344626075511&set=a.575642501245732

  Mi Prepa, https://www.facebook.com/photo?fbid=1427344626075511&set=a.575642501245732 In the interior of triangle ABC having ...