If the length of arc between two adjacent 30° points on the turning circle is measured and divided by the time taken to alter course through that 30°, this will give the mean speed half-way between the two points.
Ukuba ubude benqanawa buphakathi kwencutshe ejikayo kwisangqa ebalelwa neyohlule ixesha elithathelwa ukuthsintsha inkqubo engena kwiqondo inokunika esona santya esisiqingatha yendlela phakathi kwamanqaku amabini.