// You can find the Turtle API reference here: https://turtletoy.net/syntax
// How to draw the 16 x 8 Circles Grid
// Inspired by: https://www.youtube.com/shorts/hKbNPD8zlKo
Canvas.setpenopacity(1);

// Global code will be evaluated once.
const turtle = new Turtle();
const scale=10 // min=5, max=20, step=1 

// draw 8 concentric circles
for(n=0; n<=8; n++){  
    turtle.penup();
    turtle.goto(0,-scale * n); // center the circles
    turtle.pendown();
    turtle.circle(scale * n);
}

for(angle=0; angle<=15; angle++){
    turtle.penup();
    turtle.goto(0,0) // center of canvas
    turtle.pendown;
    turtle.seth(angle * 22.5);
    turtle.pendown();
    turtle.forward(scale * 8);
}