7.5 geometry

This module, written by Philippe Ivaldi, provides an extensive set of geometry routines, including perpendicular symbols and a triangle structure. It is documented here: http://asymptote.sourceforge.net/geometry_en.pdf, including an extensive set of examples, http://piprim.tuxfamily.org/asymptote/geometry/index.html, and an index:

http://piprim.tuxfamily.org/asymptote/geometry/modules/geometry.asy.index.type.html