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 ...

like ACUTE ANGLE, RIGHT ANGLE or REFLEX ANGLE, a summary of the possible angles plus numeral angular degree data. Isolated vector illustration on white background. Types of triangle Types of triangle: ...