Wire Bending, or Continuous Line Drawing
The interactive GeoGebra construction immediately below models the bending of a wire into a 2D design.
Enter a list of angles in the input box. Angles must be in degrees and in "standard position" (0° points along the +x axis, positive rotation is counterclockwise, negative rotation is clockwise). Enter absolute angles on the x-y plane, not relative angles to the preceding segment. Be sure to preserve the "{ }" around the entire list. If list gets too long to fit entirely in the inputbox, you may need to click/drag within the inputbox to navigate through the list.
This construction models a wire bending at 1-unit increments according to those angles. Alternately, this may be likened to the classic continuous line puzzle, in which the puzzler must replicate a design without lifting the pencil. In this GeoGebra construction though, there is nothing stopping you from retracing a path, which is prohibited in the classic puzzle.
The slider animates the bending of the wire, or use the button to start/stop the animation.
See the graphic below the GeoGebra construction that illustrates how the default list of angles correlates to the default "MATH" design.
![Notice how the angles entered in the inputbox correspond to the absolute angles of each unit segment. The full angles list is {90, 90, -45, 45, -90, -90, 60, 0, 180, 60, -60, -60, 90, 90, 180, 0, 0, -90, -90, 90, 0, -90, 90, 90}.](https://beta.geogebra.org/resource/ggnpkq3q/4Y7wEOuJthLzpApX/material-ggnpkq3q.png)
![GIF of "Math" design, with angle list {90, 90, -45, 45, -90, -90, 60, 0, 180, 60, -60, -60, 90, 90, 180, 0, 0, -90, -90, 90, 0, -90, 90, 90}](https://beta.geogebra.org/resource/gzchtvrj/eK2GauenZPb7yte3/material-gzchtvrj.gif)
![GIF of star design, with angle list {36, 180, 324, 468, 612}.](https://beta.geogebra.org/resource/jetrmshc/SQaAyi0IBovv5EnC/material-jetrmshc.gif)
![GIF of checkerboard design, with angle list {0, 90, 0, -90, 0, 90, 180, 90, 0, 90, 180, 270, 180, 90, 180, 270, 360, 270, 180, 270}.](https://beta.geogebra.org/resource/trnhxdun/cQVH5SkXg4ak0hVB/material-trnhxdun.gif)
![GIF of triangles design, with angle list {0, 60, 120, 60, -60, -180, -120, -60, 0, 60, 120, 240, 360, 300, 180, 120, 180, 240}.](https://beta.geogebra.org/resource/yvzxpjau/qkEd6tC6CIhUWmhl/material-yvzxpjau.gif)