Obtuse angle: Learn what an obtuse angle is

Learn what an obtuse angle is, how to identify it, and its properties. See real-life examples of obtuse angles and how to measure them. Explore obtuse angle triangles and their characteristics. Obtuse Angle is a type of angle that is more than a right angle (90°) but less than a straight angle (180°). Unlike acute angles , which are smaller than 90° and right angles , which measure exactly 90°, an obtuse angle exhibits an opening wider than a right angle . An obtuse angle is an angle larger than a right angle . Some definitions also stipulate that it must be smaller than a straight line. In geometry, there are various types of angles , based on measurement. The names of basic angles are Acute angle , Obtuse angle , Right angle , Straight angle , reflex angle and full rotation. An angle is geometrical shape formed by joining two rays at their end-points. An angle is usually measured in degrees.