1. Survey Plot

2. Find the exact area of the polygon. Area = sq. units L

3. What’s the area of this triangle?

8. So, list the coordinates in columns in a spreadsheet, repeating the first coordinates at the end. Then enter a formula for the area of the trapezium formed by the first pair of coordinates. Copy down this formula to the last point (point 3). Finally, sum the areas of the trapezium. PointTrapezium area 1 2 3 1 Total

9. So, list the coordinates in columns in a spreadsheet, repeating the first coordinates at the end. Then enter a formula for the area of the trapezium formed by the first pair of coordinates. Copy down this formula to the last point (point 3). Finally, sum the areas of the trapezium. PointTrapezium area 1 2 3 1 Total

10. So, list the coordinates in columns in a spreadsheet, repeating the first coordinates at the end. Then enter a formula for the area of the trapezium formed by the first pair of coordinates. Copy down this formula to the last point (point 3). Finally, sum the areas of the trapezium. PointTrapezium area 1 2 3 1 Total

11. So, list the coordinates in columns in a spreadsheet, repeating the first coordinates at the end. Then enter a formula for the area of the trapezium formed by the first pair of coordinates. Copy down this formula to the last point (point 3). Finally, sum the areas of the trapezium. PointTrapezium area 1 2 3 1 Total What if the polygon had a hole in it? Think of this point as point 4 in the list.

12. hole A D B C F E H G I J K L M N O QP R S So to include a hole insert its co-ordinates into the existing list taking care to repeat connecting points (i.e. J and K) and avoid crossing over previous lines.

14. RESOURCES

15. Find the exact area of the polygon. Area = sq. units A SIC_28

16. Find the exact area of the polygon. Area = sq. units B SIC_28

17. Find the exact area of the polygon. Area = sq. units C SIC_28

18. Find the exact area of the polygon. Area = sq. units D SIC_28

19. Find the exact area of the polygon. Area = sq. units E SIC_28

20. Find the exact area of the polygon. Area = sq. units F SIC_28

21. Find the exact area of the polygon. Area = sq. units G SIC_28

22. Find the exact area of the polygon. Area = sq. units H SIC_28

23. Find the exact area of the polygon. Area = sq. units I SIC_28

24. Find the exact area of the polygon. Area = sq. units J SIC_28

25. Find the exact area of the polygon. Area = sq. units K SIC_28

26. Find the exact area of the polygon. Area = sq. units L SIC_28

27. Find the exact area of the polygon. Area = sq. units M SIC_28

28. Find the exact area of the polygon. Area = sq. units N SIC_28