Incircle and Excircles

For triangle ABC, I is the [b]incenter[/b], and the corresponding circle inscribed by the triangle is the [b]incircle[/b].[br]J[sub]A[/sub], J[sub]B[/sub], J[sub]C[/sub] are the [b]excenters[/b], and the corresponding circles tangent to the triangle sides/sidelines are the [b]excircles[/b].[br]The sides of triangle J[sub]A[/sub]J[sub]B[/sub]J[sub]C[/sub] ([b]excentral triangle[/b]) are passing through A, B and C.

Information: Incircle and Excircles