Same idea as "Mirror Drawing," [1] but this uses _two_ mirrors that create eight-fold symmetry. [2] You can create a (slightly unrealistic) snowflake pattern in seconds. For a further challenge, teach it to draw a realistic snowflake (i.e. six-fold symmetry). [1] https://scratch.mit.edu/projects/45036200/ [2] You draw with one pen, the Leader, at the position (x,y). Then seven other pens are your Followers. In total you have eight pens all drawing at once at the positions (±x,±y) and (±y,±x). This is the symmetry of two mirrors held at a 45° angle.
