Types of Angle Print Angles come in five types. 1. An acute angle is between 0° and 90° 2. A right angle is exactly 90° 3. An obtuse angle is between 90° and 180° 4. A straight line angle is 180° 5. A reflex angle is between 180° and 360° Prev Next Add comment Name (required) E-mail (required, but will not display) Refresh SendCancel