H -7 Helicopter Coordinates -6 -5 -4 -3 -2 -1 --4 -31 -5- -6- -2- 커 -8- -9- -1- -2- 1- --5- 4 3- -10 -6- -94 0- 7- 1 3 41 5 8 une a way 9 10 Helicopter Coordinates Amazing Fact In 1861, the word 'helicopter' was first used for a machine which did not actually lift off the ground. Challenge Using the four-quadrant grid on the next page, carefully plot these points. Then, use a ruler to draw a line between each pair of coordinates. If you have done this correctly, it should reveal a special shape! Coordinates (-7,-6) (-7,-7) 2 (-7,-7) (4,-7) 3. (4,-7) (5,-6) - 4. (5,-6) (5,-5)✓ (5,-5) (3,-6) 6. (3,-6) (2,-4) (2,-4) (6,-2) ✓ 8. (6,-2) (2,1) 9 (2,1) (5,3) 10. (5,3) (6,2)✓ M. (6,2) (6,-2) V 12. (5,3) (3,5) ✓ 13. (3,5) (1,5) 14. (1,5) (1,6). 15. (1,6) (6,6)- 16. (6,6) (6,7) 17. (6,7) (1,7)✔ 18. (1,7) (1,8) 19. (1,8) (-1,8) 20. (-1,8) (-1,7) 21. (-1,7) (-6,7) (-6,7) (-6,6) An Amazing ract a Day You could also try to find out: 23. (-6,6) (-1,6) 24. (-1,6) (-1,5) 25. (-1,5) (1,5) 26. (1,5) (-3,5) 27. (-3,5) (-4,3) 28. (-4,3) (-8,5) 29 (-8,5) (-7,6) 30. (-7,6) (-8,7) 31. (-8,7) (-10,3) 34. (-9,3) (-3,-4) 35. (-3,-4) (-4,-6) 36. (-4,-6) (-7,-6) 32. (-10,3) (-10,2) 33. (-10,2) (-9,3) 37. (-9,3) (-2,-4) 38. (-2,-4) (-3,-6) 39. (-3,-6) (2,-6) 40. (2,-6) (1,-4) 41. (1,-4) (-2,-4)​