In a parallelogram ABCD, the bisectors of the consecutive angles angleA and angleB intersect at P. Show that `angleAPB=90^(@)`.

Fill in the Blanks:In a parallelogram PQRS, the bisectors of consecutive angles P and Q intersect at K. angle PKQ =____.

In a parallelogram ABCD, angleABC=50^@ .Find the other angles.

If a quadrilateral ABCD, the bisector of angleC angleD intersect at O. Prove that angleCOD=(1)/(2)(angleA+angleB)

Any two consecutive angles of a parallelogram are

In a parallelogram ABCD, angleDAB = 40^(@) find the other angles of the parallelogram.

The ratio of two consecutive angles of a parallelogram is 1:2 then the greater angle is

In parallelogram ABCD, its diagonals overline (AC) and overline (BD) intersect at O. if AO=5cm then AC= ……… cm .

In a parallelogram ABCD, E and F are the midpoints of the sides AB and DC respectively. Show that the line segments AF and EC trisect the diagonal BD.

In a parallelogram ABCD, P is the mid point of the side AD. The line BP cuts the diagonal AC in the point Q. Then the ratio AQ:QC=