A quadrilateral has angles measuring \(∠A = 65°\), \(∠B = 106°\), \(∠C = 115°\), and \(∠D = 74°\) respectively. Check if the points \(A\), \(B\), \(C\) and \(D\) are concyclic or not.
Answer:
The two opposite angles of a quadrilateral is \(180^{\circ}\).
So, the points \(A\), \(B\), \(C\) and \(D\) .