CBSE#!#Triangles and Quadrilaterals

Finding the area of figure which is combinations of triangles and quadrilaterals

The area of parallelogram; triangle and quadrilateral in terms of cross product.

For a polygon, d and n are related as d=An^(2)+Bn . The relations for a triangle and a quadrilateral are

Area OF Triangle || Quadrilateral || Centres OF Triangle

Geometrical figure ( Triangle,Quadrilateral,Rectangle,Rhombus,Kite,Trapezium) & illustration

In the figure, diagonals AC and BD of quadrilateral ABCD intersect at O such that OB = OD. If AB = CD, then show that ar( Delta DOC) = ar( Delta AOB)

In the figur e, diagonals AC and BD of quadrilateral A BCD intersect at 0 such that OB = OD. If AB = CD, then show that ar( Delta DCB) = ar( Delta ACB)

Introduction||Area OF square||Rectangle||Circle||triangle||Perimeter OF circle|| Triangle||square and rectangle||Quadrilateral||Hexagon||Pentagon||Semi Perimeter OF Triangle||ProOF OF Heron's Formula