Question

if a parallelogram is cyclic then it is rectangle

Answer 1

Yes

If the quadrilateral parallelogram is a cyclic tgen ut is rectangle

this is because of the opposite angles of parallelogram are equal

And the sum of opposite angles of cyclic quadrilateral is 180

Let the opposite angles be x

x+x=180

2x=180

x=90

similarly other two angles will be 90

If all angles of a quadrilateral is right angles then the quadrilateral knows as rectangle

so given statement is true

Answer 2

here is the solution to your question