# 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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