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Q:

In a quadrilateral ABCD, E is a point in the interior of the quadrilateral such that DE and CE are the bisectors of ∠D and ∠C, respectively. If ∠B = 82° and ∠DEC = 80°, then ∠A = ?

  • 1
    75°
  • 2
    81°
  • 3
    84°
  • 4
    78°
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Answer : 4. "78°"

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