Tarry Point
The point T at which the lines through the polygon vertices of a triangle perpendicular to the corresponding sides of the first Brocard triangle, are concurrent. The Tarry point lies on the circumcircle opposite the Steiner point S. It has equivalent triangle center functions α | = | (b c)/(b^4 + c^4 - a^2 b^2 - a^2 c^2) α | = | sec(A + ω), where ω is the Brocard angle. The Simson line of the Tarry point is perpendicular to the line O K, when O is the circumcenter and K is the symmedian point. The Tarry point of the first Brocard triangle of a triangle Δ A B C is the circumcenter of Δ A B C.