1) the diagonals PR QS of a parallelogram PQRS cut at O.if angle QPO=30,angle SQR=?WHY?
A)30 B)50 C)80 D)100
2)the opposite angles of a parallelogram are (3x-12)(52+2x).find the angles of the parallelogram.
3)the exteriorinterior angles of a regular polygon are in the ratio1:9.find
a)no. of sides of the polygon B)sum of all the interior angles of the polygon
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