Circle angles

3 and 9 form a 180^o  angle   ....2 and 10 form a 120^o   angle      ......    you can finish....

I am not sure about that because when we calculate the angle of a clock dont we use something like Angle = Minute *60/360. What I am not sure is do I assume it to be 3:45 and 2:50 or 9:15 and 10:10. The angle value I get when I assume the clock hands as 3:45 and 2:50 is 12.5 while 9:15 and 10:10 gives me the answer 57.5. and there is my confusion

Each hour is 30 degrees      9 oclock is   270

                                              3 oclock is    90              270 - 90 = 180 degrees

Look at a clock face   9   and 3 are opposites....180 degrees

10 oclock is   60 degrees short of vertical   2 oclock is 60 degrees past vertical   60 + 60 = 120

The hands should be 3 and 9  that it 180 degrees apart

they are on 2 and 10 that is 120 degrees apart

The DECREASE is  60 degrees