Extouch Triangle
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The extouch triangle of a triangle is formed by joining the points at which the three excircles touch the triangle. In geometry, the trilinear coordinates of a point relative to a given triangle describe the relative distances from the three sides of the triangle. Trilinear coordinates are an example of homogeneous coordinates. They are often called simply "trilinears". The incenter has trilinears 1 : 1 : 1; that is, the (directed) distances from the incenter to the s...
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The extouch triangle of a triangle is formed by joining the points at which the three excircles touch the triangle. In geometry, the trilinear coordinates of a point relative to a given triangle describe the relative distances from the three sides of the triangle. Trilinear coordinates are an example of homogeneous coordinates. They are often called simply "trilinears". The incenter has trilinears 1 : 1 : 1; that is, the (directed) distances from the incenter to the sidelines BC, CA, AB of a triangle ABC are proportional to the actual distances, which are the ordered triple (r, r, r), where r is the inradius of triangle ABC.
