In a quadrilateral ABCD, A=73°, B=84°, C=102°, find D.
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Answer:
A+B+C+D=360°
73°+84°+102°+D=360°
259°+D=360°
D=360°-259°
D=101°
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D=101°
Step-by-step explanation:
since sum of all angles of quadrilateral is 360..A+B+C+D=360°
73°+84°+102°+D=360°
angle D =101°
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