Consider a right triangle with an inscribed circle. Let x and y be the lengths of the two line segments formed on the hypotenuse by the point of tangency with the circle. What interesting fact can you prove about x*y?
(In reply to A possible solution
by Old Original Oskar!)
Call the radius of the circle R.
Construct the 3 radii to the points of tangency. The triangle is disected into 2 kites and a square.
The area by these pieces A= xr + yr + r^2
The area by the original triangle A= .5(x+r)(y+r)
Simplify xr + yr + r^2 = .5(x+r)(y+r)
2xr + 2yr + 2r^2 = xy + xr + yr + r^2
xy = xr + yr + r^2
Posted by Jer
on 2005-02-28 19:03:11