13. In parallelogram ABCD, `AB = 2x + 7, BC = 4x-5, CD = 3x - 8`. Find the perimeter of the parallelogram.

In parallelogram ABCD, AB = 16 cm, BC = 12 cm and diagonal AC = 20 cm. Find the area of the parallelogram.

Parallelogram ABCD AB = 6 cm,BC = 5 cm , angleD = 70 ^@

In a rectangle ABCD, AB = x + y, BC = x - y, CD = 9 and AD = 3. Find the values of x and y.

If in the parallelogram ABCD angleA : angleB = 3 : 2 , then find the angles of the parallelogram ABCD.

The area of any parallelogram ABCD, is AB X BC.

In parallelogram ABCD, slope of AB = -2, slope of BC = 3/(5) . State the slope of CD

In parallelogram ABCD, slope of AB = -2, slope of BC = 3/(5) . State the slope of AD

The adjacent angles of a parallelogram are (2x – 4)° and (3x – 1)°. Find the measures of all angles of the parallelogram.

The perimeter of a parallelogram ABCD = 40 cm , AB = 3x cm, BC = 2x cm and CD = 2( y+1) cm . Find the values of x and y.