Type of triangle-1??

Geometry Level 4

If in any triangle \(r=r_{1}-r_{2}-r_{3}\) then the triangle is

where,

\(r\) is radius of incircle and \(r_{1},r_{2},r_{3}\) are radii of ex-circle of \(\Delta\)\(ABC\)

\(r_{1}\) is radius of ex circle of vertex \(A\). \(r_{2}\) of vertex \(B\) and \(r_{3}\) of vertex \(C\)

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