Updated: Nov 28, 2020
The 1-tree is composed of 19 triangles. with (19×3=57) sectors. Turning each sector into a tetractys generates a 1-tree composed of 251 yods,* i.e., 240 new yods in addition to the ten Sephiroth and Daath located at the corners of the 19 triangles
The number 240 is embodied in the geometry of the 2-dimensional Sri Yantra as the 240 corners, sides & triangles that surround its centre (for proof, see page 8 in Article 35 (WEB, PDF)). As will be proved in the section Superstrings as sacred geometry, this number is embodied in different examples of sacred geometry because it denotes the 240 roots of E8, the rank-8, exceptional Lie group that governs the unbroken symmetry of the unified force between E8×E8′ heterotic superstrings of ordinary matter (these are a singlet state of the second group E8′).