How to Prove the Area Inequality Between Excenters and Triangle ABC?

Harmeet Singh
If I1,I2,I3 are the excentres of tringle ABC then prove that
Area of triangle I1 I2 I3 >=4*Area of triangle ABC ?
 
Physics news on Phys.org
What have you done? atleast did you get an idea from where can we reach the answer or even couldn't start with. specify them
 
The working out suggests first equating ## \sqrt{i} = x + iy ## and suggests that squaring and equating real and imaginary parts of both sides results in ## \sqrt{i} = \pm (1+i)/ \sqrt{2} ## Squaring both sides results in: $$ i = (x + iy)^2 $$ $$ i = x^2 + 2ixy -y^2 $$ equating real parts gives $$ x^2 - y^2 = 0 $$ $$ (x+y)(x-y) = 0 $$ $$ x = \pm y $$ equating imaginary parts gives: $$ i = 2ixy $$ $$ 2xy = 1 $$ I'm not really sure how to proceed from here.

Similar threads

Back
Top