The angle between the hands of a clock when it is 9:15 is a bit more than 180 degrees. Depending on how the clock works, t might be 185 degrees or so (175 if you look at the opposite angle.
Measuring from the minute hand (at 12) and going clockwise, it would be 210 degrees.
The angle formed is 60 degrees.
The hands of a clock at 2 o'clock will form an acute angle of 60 degrees
It is a right angle.
A right angle.
A straight-angle. 180o.
135 degrees angle
It is an acute angle