Triangle QRS has the angle measures shown. m angle cap q is equal to 1 x degrees m angle cap r is equal to 3 x degrees m angle cap s is equal to 6 x degrees What is the measure of the obtuse angle?

The angles in a triangle add up to 180°. So x + 3x + 6x = 180°, which gives 10x = 180° and x = 18°. The angles are 18°, 54°, and 108°; the obtuse angle is 108°, choice D.

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