In parallelogram ABCD, bisectors of angles A and B intersect each other at "O" the value of angle AOB is.

In a parallelogram ABCD, the bisectors of angleA and angleB intersect each other at point P. Prove that angleAPB=90^(@).

In a parallelogram ABCD, the bisectors of angleA and angleB intersect each other at point P. Prove that angleAPB=90^(@).

In parallelogram ABCD, the bisectors of adjacent angles A and D intersect each other at point P. prove that angleAPD=90^(@) .

In parallelogram ABCD, find angle B, angle C and angle D.

In a parallelogram ABCD, the bisectors of /_A and /_B meet at O. Find /_AOB.

In a parallelogram ABCD ,the bisector of angle ABC intersects AD at P .If PD=5,BP=6 and CP=6, find AB