Turtle Graphics Solutions

Turtle Graphics Solutions

Page 1

1.

• PENUP
• FORWARD 70
• PENDOWN
• FORWARD 60
• PENUP
• FORWARD 80
• RIGHT 90
• PENDOWN
• RIGHT 90
• FORWARD 80
• RIGHT 90
• FORWARD 100

2.

• RIGHT
• REPEAT 8658
  • 60
  • 90
• FORWARD 50
• LEFT
• END REPEAT

3.

• PENDOWN
• FORWARD 70
• PENUP
• FORWARD 70
• PENDOWN
• FORWARD 40

4.

• RIGHT 90
• FORWARD 50
• RIGHT 90
• FORWARD 80
• PENDOWN
• FORWARD 70
• FORWARD 70
• REPEAT 4
  • RIGHT 90
  • FORWARD 40
• PENUP
• RIGHT 90
• FORWARD 70
• END REPEAT
• PENDOWN

Page 2

5.

• PEN DOWN
• END REPEAT
• LEFT 96
• 90
• PENUP
• REPEAT 2
  • FORWARD 90
  • FORWARD 50
• RIGHT 5580
• PENDOWN
• 90
• FORWARD 70

6.

• PEN DOWN
• FORWARD 886
• RIGHT 80
• PENUP
• FORWARD 90
• PENDOWN
• FORWARD 7636
• REPEAT 70
  • 30
  • 60
• 60
• ENDREPEAT

7. Error Corrections

(a) Missing Instructions and Placement

• FORWARD 10 is missing:
  • Before the first PENUP
  • As the 5th instruction overall
  • After the 4th instruction
  • Before the first RIGHT 90
  • Between the 4th and 5th instruction

(b) Incorrect Values

• First FORWARD 20 (instruction 6) should be FORWARD 10
• Second PENUP (instruction 8) should be PENDOWN
• FORWARD 90 (instruction 9) should be FORWARD 35
• RIGHT 35 (instruction 10) should be RIGHT 90