## Inscribed Circle

Let us study a Circle inscribed in Equilateral Triangle and Square First let’s see the Circle in Equilateral Triangle By Pythagoras theorem in triangle BAP BA2 = AP2 + BP2 t2 =  L2 + (t/2)2     L2 =  3t2 /4 L  =  √3 t/2 Again by Pythagoras theorem in triangle BOP BO2 = OP2 + BP2 (L – r) 2 =  r 2 + (t/2) 2 r2 = (√3t/2 – r)2 – (t/2)2 […]

## Circumscribed Square

The square which is made in a circle such that all four vertices of a square touches circle is called Circumscribed square. By Pythagoras theorem in triangle BOC s2    =  r2 + r2 s = √2r Areas In terms of radius ‘r’ In terms of side ‘s’ Area of square ABCD with side ‘s’ […]

## Circumscribed Triangle

The triangle which is made in a circle such that all three vertices of a triangle touches circle is called Circumscribed Triangle. Let us see the an example of Circumscribed equilateral triangle. By Pythagoras theorem in triangle BAP BA2 = AP2 + BP2 t2 =  L2 + (t/2)2     L2 =  3t2 /4 L  =  √3 t/2 […]

## Mensuration Formulas

Mensuration is the branch of mathematics which deals with the study of Geometric shapes, their area, volume and related parameters. Some important mensuration formulas in one poster: Download