A quadrilateral where the diagonals are equal and intersect each other at right angle, is known as a .

If the number of sides in a polygon is “n” then the number of diagonals that can be drawn from one of the vertices would be_____

The four vertices of a square piece of paper have been cut off with the help of a pair of scissors. What kind of polygon figure has been obtained ?

The sides of a polygon are $8$ in numbers what would be the sum of its interior angles?

If one of the angles of a parallelogram is $120°$, find the measurement of the other angles?

 The adjacent sides of a parallelogram are in the ratio $3 : 4$, If the perimeter of a parallelogram is $84 \mathrm{cm}$, find out its sides.

 Correct and rewrite if the given statement is not true.

 All squares are rhombus.