Elapsed time is the amount of time used from the beginning of an event to the end of that particular event. The beginning of the event is the start time and the end is the end time.
Start time= 1.35
End time= 6.00
To get the elapse time, subtract 1.35 from 6.00 and recall that 60 minutes make one hour.
A quadrilateral measured 360. if you do not know that you can multiply 360 by 2 because there are 2 triangles in a quadrilateral. Then you subtract 360 by 75,115, and 90. And you will get 80 degrees
