What angle is 5:30
 => 5 – hour hand and 30 – minute hand
 => Answer is acute angle
 Because acute angle refers to angle with less than 90 degrees measurement. And since 5:30 = 5 and 6 numbers in clock, and note that 5 and 6 are place next to each other. Thus they formed acute angle.
 Right angle in clock are, 3:00, 3:30, 6:45, 9:00, 9:30 and 12:15. This time all formed exactly 90 degrees
 Obtuse angle are those that measure more than 90 degrees