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  1. In a cyclic quadrilateral ∠A + ∠C = ∠B + ∠D = ?
    1. 270°
    2. 360°
    3. 90°
    4. 180°
Correct Option: D

As per the given in question , we draw a figure cyclic quadrilateral ABCD ,

The sum of opposite angles of a concyclic quadrilateral = 180°
∴ ∠A + ∠C = ∠B + ∠D = 180°


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