SOLUTION: Quadrilateral w/3 angles 120, 110, & 70 what is the 4th angle

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Question 848155: Quadrilateral w/3 angles 120, 110, & 70 what is the 4th angle

Answer by ewatrrr(24785) About Me  (Show Source):
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Hi,

Quadrilateral:  SUM of its angles is 360°

360° - 120° - 110° - 70° = 360° - 300° = 60°