In a parallelogram, the length of adjacent sides are known. Do we still need measure of the angles to construct above?

In a parallelogram, sum of any two adjacent angles is 180^@ .

If an angle of a parallelogram is two thid of its adjacent angle, find the angles of the parallelogam.

Determine the area of the parallelogram whose adjacent sides are 2 hat i and 3 hat j .

Construct the following : Construct a parallelogram whose adjacent sides are 3.5 cm and 4 cm and the angle between them is 120^(@) .

Find the perimeter of the parallelogram whose adjacent sides are 3 and 7.

The area of the parallelogram whose adjacent sides are hat i+hat k and 2hat i+ hatj +hat k ts