Understanding Q...

If the two adjacent angles of a parallelogram are $$(3x-20^\circ)$$ and $$(50^\circ -x)$$, then the value of $$x$$ is:

If an angle of a parallelogram is four-fifths of its adjacent angle, what are the angles of the parallelogram?

A parallelogram and a triangle stand on the same side of the base with the same base and on the same side of the base with the same height. If $${l}_{1}$$, $${l}_{2}$$ be the perimeters of the parallelogram and the rectangle respectively, then the which one of the  following is correct?

A school was having 4 Hexagonal buildings joined to each other. They wanted to utilize the space between the 4 buildings to make a playground. The shape is that of a parallelogram. Can you find the measure of the angles as opposite angles are equal?

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

The parallelogram PQRS is formed by joining together four equilateral triangles of side 1 unit, as shown in the figure.
What is the length of the diagonal SQ?

In a parallelogram $$ABCD$$, if $$AB = 2x + 5, CD = y + 1, AD = y + 5$$ and $$BC = 3x - 4$$, what is the ratio of $$AB$$ and $$BC$$?

In the given figure, ABCD is a parallelogram, AL $$\perp$$ BC, AM$$\perp$$ CD, AL$$=4$$cm and AM$$=5$$cm. If BC$$=6.5$$cm, then find CD.

Which of the following closed plane figures is/are not polygons?

A parallelogram with all equal sides are called _________.