Text this: Reflecting triangles with a dense set of vertex points in the plane

  _____     ______             __   __   _    _   
 / ____||  /_   _//     ___    \ \\/ // | \  / || 
/ //---`'   -| ||-     /   ||   \ ` //  |  \/  || 
\ \\___     _| ||_    | [] ||    | ||   | .  . || 
 \_____||  /_____//    \__ ||    |_||   |_|\/|_|| 
  `----`   `-----`      -|_||    `-`'   `-`  `-`  
                         `-`