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In a cyclic parallelogram
sum of opp angles will be equal to 180°
But,
opp angles are equal in a parallelogram
Let, angle A and angleB be those 2 opp angles
So,
angleA+angleB= 180°
=> angleA+angleA=180°
=> angleA=angleB=90°
So
similarly the other pair of angles will also be 90°
So ,
since all angles will be 90°
cyclic parallelogram will be a rectangle
sum of opp angles will be equal to 180°
But,
opp angles are equal in a parallelogram
Let, angle A and angleB be those 2 opp angles
So,
angleA+angleB= 180°
=> angleA+angleA=180°
=> angleA=angleB=90°
So
similarly the other pair of angles will also be 90°
So ,
since all angles will be 90°
cyclic parallelogram will be a rectangle
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