if a quadrilateral ABCD A = 200° , B = 100° , C = 50° then D is how much ?
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Answer:In quadrilateral ABCD
Angle A +B+C+D = 360° (Interior angles of a quadrilateral)
100°+60°+60°+D = 360°
D = 360°- 220°
D = 140°
Step-by-step explanation:
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