This is just one of many possible solutions:
Solution #1:
Sprite:
when clicked clear set pen size to 3 set pen color to go to x: 0 y: 100 pen down wait 1 secs go to x: -100 y: 100 wait 1 secs go to x: -100 y: 0 wait 1 secs go to x: -100 y: 0 wait 1 secs go to x: -200 y: 0 wait 1 secs go to x: -200 y: -100 wait 1 secs go to x: 0 y: -100 wait 1 secs go to x: 0 y: 100 pen up Mirror Sprite:
when clicked clear set pen size to 3 set pen color to go to x: 0 y: 100 pen down wait 1 secs go to x: 100 y: 100 wait 1 secs go to x: 100 y: 0 wait 1 secs go to x: 100 y: 0 wait 1 secs go to x: 200 y: 0 wait 1 secs go to x: 200 y: -100 wait 1 secs go to x: 0 y: -100 wait 1 secs go to x: 0 y: 100 pen up Solution #2:
Sprite:
when clicked set angle to 90 clear set pen size to 3 set pen color to go to x: 0 y: 0 point in direction 0 pen down move 100 steps turn angle degrees wait 1 secs move 100 steps turn angle degrees wait 1 secs move 100 steps turn angle degrees wait 1 secs move 100 steps turn angle degrees wait 1 secs move 100 steps turn angle degrees wait 1 secs move 200 steps turn angle degrees wait 1 secs move 100 steps wait 1 secs pen up Mirror Sprite:
when clicked set mirror angle to 360 - angle clear set pen size to 3 set pen color to go to x: 0 y: 0 point in direction 0 pen down move 100 steps turn mirror angle degrees wait 1 secs move 100 steps turn mirror angle degrees wait 1 secs move 100 steps turn mirror angle degrees wait 1 secs move 100 steps turn mirror angle degrees wait 1 secs move 100 steps turn mirror angle degrees wait 1 secs move 200 steps turn mirror angle degrees wait 1 secs move 100 steps wait 1 secs pen up
Scratch solution
