Text this

Number:

Provider:

CAPTCHA:

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

Please enter what you see:

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