LOGO Programming

Polygons

One of the easiest things to do in logo is use the turtle to draw various polygons. You can notice that in order to draw a closed polygon, the turtle has to walk around the edges, eventually turning through 360 degrees before coming back home. Since the turtle makes N turns for an N-sided polygon, the size of each turn in 360/N degrees.

Triangle (3 sides)
Turtle Turns 120º

REPEAT 3 [FD 100 RT 120]

Square (4 sides)
Turtle Turns 90º

REPEAT 4 [FD 100 RT 90]

Pentagon (5 sides)
Turtle Turns 72º

REPEAT 5 [FD 100 RT 72]

Hexagon (6 sides)
Turtle Turns 60º

REPEAT 6 [FD 100 RT 60]

Septagon (7 sides)
Turtle Turns 51º

REPEAT 7 [FD 100 RT 51]

Octagon (8 sides)
Turtle Turns 45º

REPEAT 8 [FD 100 RT 45]