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Difficulty—
Is triangle ABC obtuse angled?
(1) a^2 + b^2 > c^2
(2) The center of the circle circumscribing the triangle does not lie inside the triangle.
OA E
Source: Official Guide
(1) a^2 + b^2 > c^2
(2) The center of the circle circumscribing the triangle does not lie inside the triangle.
OA E
Source: Official Guide
