1.
In the figure below what is the Angular error of closure ? If the true total lenghth of the perimeter
is 573.468', what is the Linear error of closure, Relative Accuracy and Order/Class?
Solution
sum of internal angle of a polygen is (n-2)180
in this case n= no of side = 5
sum of total internal angle = (5-2)*180 = 540°
here sum of all angle is 109°46'30" + 8057'00"+ 115°45'00" + 90° +143°56'30" =
540°25'00"
angular erroe = 540°25'00" - 540° = 0°25'00" (+ve)
perimeter= sum of all sides=
linear error = final length - orginal lingth
I can't understand what this symble indicates 179' 4-1/4" ( in bold one )