Robotics Worksheet: Loops and Shapes

Robotics lesson 22: Loops and shapes · Set 74 · 40 questions

Robot tip (Repeat the side): repeat n { forward s; turn right A° } drives n sides: distance = n × s. A closed regular shape needs n × A = 360°, so A = 360 ÷ n. Rectangle: repeat 2 { forward a; turn 90°; forward b; turn 90° } → perimeter 2 × (a + b), area a × b.

1. 1.🔁 A drawing robot runs:
   repeat 2 { forward 40 cm; turn right 90°; forward 15 cm; turn right 90° }
   How many cm does it drive in all?
2. 2.🔁 Why do we use a loop to draw a square? (a) squares need 5 sides (b) to make it crash (c) loops are colourful (d) the same steps repeat
3. 3.🔁 A drawing robot runs:
   repeat 4 { repeat 4 { forward 15 cm; turn right 90° } }
   How many cm does it drive in all?
4. 4.🔁 A robot must draw a regular octagon (8 equal sides):
   repeat 8 { forward 80 cm; turn right ?° }
   What number goes in place of “?”
5. 5.🔁 A drawing robot runs:
   repeat 5 { forward 50 cm; turn right 72° }
   Which shape does it draw? (a) square (b) triangle (c) octagon (d) pentagon
6. 6.🔁 A drawing robot runs:
   repeat 4 { forward 80 cm; turn right 90° }
   Which shape does it draw? (a) square (b) pentagon (c) triangle (d) hexagon
7. 7.🔁 A drawing robot runs:
   repeat 4 { repeat 4 { forward 5 cm; turn right 90° } }
   How many cm does it drive in all?
8. 8.🔁 To draw any closed regular shape, a robot turns how many degrees in all? (a) 90° (b) 360° (c) 720° (d) 180°
9. 9.🔁 A drawing robot runs:
   repeat 2 { forward 40 cm; turn right 90°; forward 30 cm; turn right 90° }
   What is the area of the rectangle it draws (in square cm)?
10. 10.🔁 A drawing robot runs:
    repeat 4 { repeat 4 { forward 10 cm; turn right 90° } }
    How many cm does it drive in all?
11. 11.🔁 A drawing robot runs:
    repeat 2 { forward 30 cm; turn right 90°; forward 15 cm; turn right 90° }
    How many cm does it drive in all?
12. 12.🔁 A robot must draw a regular octagon (8 equal sides):
    repeat 8 { forward 60 cm; turn right ?° }
    What number goes in place of “?”
13. 13.🔁 A drawing robot runs:
    repeat 4 { forward 10 cm; turn right 90° }
    How many cm does it drive in all?
14. 14.🔁 A drawing robot runs:
    repeat 2 { repeat 4 { forward 20 cm; turn right 90° } }
    How many cm does it drive in all?
15. 15.🔁 A drawing robot runs:
    repeat 2 { forward 60 cm; turn right 90°; forward 45 cm; turn right 90° }
    What is the area of the rectangle it draws (in square cm)?
16. 16.🔁 A drawing robot runs:
    repeat 8 { forward 80 cm; turn right 45° }
    Which shape does it draw? (a) triangle (b) octagon (c) square (d) hexagon
17. 17.🔁 A drawing robot runs:
    repeat 6 { forward 75 cm; turn right 60° }
    How many cm does it drive in all?
18. 18.🔁 A drawing robot runs:
    repeat 5 { forward 95 cm; turn right 72° }
    How many cm does it drive in all?
19. 19.🔁 A drawing robot runs:
    repeat 2 { forward 40 cm; turn right 90°; forward 45 cm; turn right 90° }
    How many cm does it drive in all?
20. 20.🔁 A drawing robot runs:
    repeat 3 { forward 30 cm; turn right 120° }
    How many cm does it drive in all?
21. 21.🔁 A drawing robot runs:
    repeat 2 { repeat 4 { forward 30 cm; turn right 90° } }
    How many cm does it drive in all?
22. 22.🔁 A drawing robot runs:
    repeat 5 { forward 100 cm; turn right 72° }
    Which shape does it draw? (a) triangle (b) octagon (c) square (d) pentagon
23. 23.🔁 For a regular shape with n sides, each turn is … (a) 360 ÷ n degrees (b) 90 degrees always (c) 180 degrees always (d) n × 360 degrees
24. 24.🔁 A drawing robot runs:
    repeat 5 { forward 65 cm; turn right 72° }
    Which shape does it draw? (a) pentagon (b) square (c) triangle (d) hexagon
25. 25.🔁 A robot must draw a regular pentagon (5 equal sides):
    repeat 5 { forward 40 cm; turn right ?° }
    What number goes in place of “?”
26. 26.🔁 A robot must draw a regular triangle (3 equal sides):
    repeat 3 { forward 70 cm; turn right ?° }
    What number goes in place of “?”
27. 27.🔁 A drawing robot runs:
    repeat 6 { forward 10 cm; turn right 60° }
    How many cm does it drive in all?
28. 28.🔁 A drawing robot runs:
    repeat 5 { repeat 4 { forward 10 cm; turn right 90° } }
    How many cm does it drive in all?
29. 29.🔁 A robot must draw a regular octagon (8 equal sides):
    repeat 8 { forward 45 cm; turn right ?° }
    What number goes in place of “?”
30. 30.🔁 A drawing robot runs:
    repeat 5 { forward 15 cm; turn right 72° }
    Which shape does it draw? (a) square (b) pentagon (c) triangle (d) hexagon
31. 31.🔁 A drawing robot runs:
    repeat 3 { repeat 4 { forward 25 cm; turn right 90° } }
    How many cm does it drive in all?
32. 32.🔁 A drawing robot runs:
    repeat 5 { repeat 4 { forward 30 cm; turn right 90° } }
    How many cm does it drive in all?
33. 33.🔁 A drawing robot runs:
    repeat 3 { repeat 4 { forward 30 cm; turn right 90° } }
    How many cm does it drive in all?
34. 34.🔁 A drawing robot runs:
    repeat 6 { forward 85 cm; turn right 60° }
    How many cm does it drive in all?
35. 35.🔁 A drawing robot runs:
    repeat 2 { forward 40 cm; turn right 90°; forward 20 cm; turn right 90° }
    How many cm does it drive in all?
36. 36.🔁 A robot must draw a regular square (4 equal sides):
    repeat 4 { forward 85 cm; turn right ?° }
    What number goes in place of “?”
37. 37.🔁 A drawing robot runs:
    repeat 2 { forward 30 cm; turn right 90°; forward 45 cm; turn right 90° }
    How many cm does it drive in all?
38. 38.🔁 A drawing robot runs:
    repeat 6 { forward 35 cm; turn right 60° }
    How many cm does it drive in all?
39. 39.🔁 A drawing robot runs:
    repeat 8 { forward 25 cm; turn right 45° }
    How many cm does it drive in all?
40. 40.🔁 A robot must draw a regular pentagon (5 equal sides):
    repeat 5 { forward 30 cm; turn right ?° }
    What number goes in place of “?”

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