Quadrilaterals are the four-sided polygons. By this, it means that the no. of sides, vertices and angles they have is four each. In Quadrilaterals, the internal angles total up to 360⁰ There are 7 types of different Quadrilateral.

Quadrilateral Formulas for different quadrilateral types.

Quadrilateral Type	Quadrilateral Formula
Square	= p×p, p is side.
Rectangle	= l×b
Rhombus	= $\begin{array}{l} \frac{d 1 \times d 2}{2} \end{array}$ , d1 and d2 are diagonals.
Parallelogram	= b×h
Trapezium	= $\begin{array}{l} \frac{[(a + b) h]}{2} \end{array}$
Isosceles Trapezium	= $\begin{array}{l} \frac{[(a + b) h]}{2} \end{array}$
Kite	$\begin{array}{l} \frac{d 1 \times d 2}{2} \end{array}$ , d1 and d2 are diagonals.

Solved Examples of Formulas of Quadrilateral

Q: The area of a parallelogram is 36 and the height is 6. Find the base.

Sol: Given, area=36, and h=6

To find: base b

Formula: b×h

Area of parallelogram=b×h

36 =b(6)

b=36 / 6 = 6

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Quadrilateral Formulas for different quadrilateral types.

Solved Examples of Formulas of Quadrilateral

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