In a parallelogram the sum of any two adjacent angles is `180^0dot`

In a parallelogram; the bisectors of any two consecutive angles intersect at right angle.

In a parallelogram, the ratio of the two adjacent sides is 1 : 2. If the area of the parallelogram is 20 square units and the angle beween the two sides is 45^(@) , what is the area, to the nearest integer, of the rectangle having the sides equal to that of the parallelogram?

In a parallelogram A B C D , prove that sum of any two consecutive angles is 180^0dot

In a parallelogram, two adjacent angles are supplementary.

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

If an angle of a parallelogram is two-third of its adjacent angle, find the angles of the parallelogram.

If an angle of a parallelogram is two-third of its adjacent angle, find the angles of the parallelogram.

If an angle of a parallelogram is two-third of its adjacent angle, find the angles of the parallelogram.

Prove that in any parallelogram the sum of squares of the diagonals is twice the sum of the squares of two adjascent sides. Also show that the difference of the squares on two adjacent sides is equal to the rectangle contained by either diagonal and the projection of the other upon it.

In a parallelogram A B C D , write the sum of angle A\ a n d\ B