1) Let's sketch this out to better grasp it.
A) Right Angle. A right angle is a 90º angle so we have the following possibilities:
Note that a whole circle has 360º and from point 1 to 2 we have 30º since:
[tex]\frac{360}{12}=30[/tex]So we for the Right Angles on the clock:
3:00, 9:00 and 9:30
B) Obtuse angle
An obtuse angle is an angle whose measure is greater than 90º.
