A three-quarter turn is 270°. An acute angle is less than 90°. An obtuse angle is between 90° and 180°. A reflex angle is between 180° and 360°. These are all right angles as they are all a ...

HYDERABAD: Governor Jishnu Dev Varma on Tuesday released ‘Obtuse Angle’, a cartoon book which opens a window to the world of bureaucracy with subtle humor by retired IAS officer BP Acharya ...