A 2dimensional four sided polygon is called as a Quadrilateral. Different types of Quadrilateral are


Opposite sides are parallel and equal.

Area = base x height



Two pairs of adjacent sides are equal.
AB = BC and AD = CD

Diagonals intersect at right angles.

Area = ^{(AC x BD)}⁄_{2}



Opposite sides are parallel and equal.

Each angle in a rectangle is 90°.

Area = Length x width



All the four sides are equal.

Diagonals are perpendicular.

Area =^{ (PQ × RS)}⁄_{2}


A pair of sides is parallel.
Area = ^{(a+b)h}⁄_{2}
Here a, b are length of parallel sides
And h is the height. 


All the sides are equal.

Diagonals bisect each other.

Each angle in a square is equal to 90°

Area = side²

1) A parallelogram with all sides equal and angles as right angles is a
(a) Rectangle (b) Square (c) Rhombus (d) Kite
Answer: b
2) Select a regular quadrilateral from the following
(a) Rectangle (b) Parallelogram (c) Square (d) Rhombus
3) Statement I: A square is also a rectangle.
Statement II: A rectangle is also a square.
(a) Both I & II are true (b) I is true, II is false
(c) I is false, II is true (d) Both I & II are false
Answer: b
4) Sum of interior angles in a quadrilateral is
(a)180° (b) 360° (c) 90° (d) can't be determined