trisection point

Noun

 * 1)  Either of two points which trisect a given line segment.
 * 2) * 1959 [Doubleday], William R. Gondin, Bernard Sohmer, Intermediate Algebra & Analytic Geometry Made Simple, 1967, W. H. Allen, page 147,
 * Find the trisection points of the line $$P_4P_5$$ in the same diagram.
 * 1) * 1965, Paul A. White, Vector Analytic Geometry, Dickenson Publishing Company, page 73,
 * In triangle $$ABC$$, let $$E$$ be the midpoint of $$BC$$ and $$D$$ the trisection point of $$AC$$ nearest $$C$$.
 * 1) * 1998,, An Imaginary Tale: The Story of $$\sqrt{-1}$$, , 2010, paperback, page 88,
 * And if $$\lambda=2$$, then $$P$$ is a trisection point of $$P_1P_2$$ and
 * $$z=\frac{z_1+2z_2}{3}$$.
 * Notice that this trisection point is closer to $$P_2$$ than it is to $$P_1$$. The other trisection point, the one that is closer to $$P_1$$ than it is to $$P_2$$, occurs for $$\lambda=\tfrac 1 2$$, which gives
 * $$z=\frac{2z_1+z_2}{3}$$.
 * $$z=\frac{2z_1+z_2}{3}$$.