Understanding Q...

In parallelogram ABCD , CD = 6 cm and AF = 8 cm. If AB = 12 cm, than CE equals to  

A parallelogram, the lengths of whose sides are 11 cm and 13 cm, has one diagonal 20 cm, long the length of another diagonal is 

What type of angle is formed at the point of intersection of the angle bisectors of two adjacent angle of a parallelogram?

The two adjacent sides of a parallelogram are 4 cm and 9 cm. The ratio of its altitude is 

In the given figure, ABCD is a parallelogram such that AB||CD and AD||BC with opposite angles equal. If DA=DX, then find the values of $$\angle{m}$$ and $$\angle{n}$$.

Diagonals of a parallelogram ABCD intersect at point O. If $$\angle BOC = 90^\circ $$ and $$\angle BDC = 50^\circ $$, then $$\angle OAB$$ is :

In the given figure, ABCD is a parallelogram. If AB = 12 cm, AE = 7.5 cm, CF = 15 cm then AD =

The altitude of a parallelogram is twice of the length of the base and its area is 900 $$c{m^2}$$ . The length of base and altitude respectively are

Which of the following is a property of a parallelogram ?