SOLUTION: Three Angles Of A Quadrilateral Are 98,72 and 105.What Is The Exterior Angle Of The Fourth Angle?

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Question 1036751: Three Angles Of A Quadrilateral Are 98,72 and 105.What Is The Exterior Angle Of The Fourth Angle?
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Three Angles Of A Quadrilateral Are 98,72 and 105.What Is The Exterior Angle Of The Fourth Angle?
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1.  The sum of the tree angles is 98° + 72° + 105° = 275°.

2.  The fourth angle of the quadrilateral = 360° - 275° = 85°.

3. The exterior angle of the fourth angle is 180° - 85° = 95°.