Understanding Q...

Suppose $$ABCD$$ is a parallelogram in which $$\angle A = 108^{\circ}$$. Calculate $$\angle B, \angle C$$ and $$\angle D$$.

Which of the following statement(s) is/are correct?

The angles A, B, C, D in the parallelogram ABCD are ___________.

Which of the following statements is definitely true, if PQRS is a parallelogram?

ABCD is a parallelogram and L is a point on DB. The produced line AL meets BC at M and DC produced at N. Given that DL$$=3$$LB, find $$\displaystyle\frac{AB}{CN}$$.

Select the INCORRECT match.

Choose the correct answer from the alternatives given.
In a parallelogram $$PQRS,$$ angle $$P$$ is four times of angle $$Q.$$ then the measure of $$\angle R$$ is:

If $$ABCD$$ is a parallelogram whose diagonals intersect at $$O$$ and $$\triangle BCD $$ is an equilateral triangle having each side of length $$6$$ cm, then the length of diagonal $$AC$$ is: 

In a parallelogram ABCD, $$\angle B= (2x+ 25)^0$$ and $$\angle D= ( 3x-5)^0$$. Find:
(i) The value of $$x$$
(ii) Measure of angle.

An exterior angle and an interior angle of a regular polygon are in the ratio $$2: 7$$. Find the number of sides in the polygon.