This document defines and provides examples of different types of angles: 1. Right angles measure exactly 90 degrees. Acute angles measure less than 90 degrees and are described as sharp and pointy. Obtuse angles measure more than 90 degrees and are described as flat and wide. 2. Examples of acute angles are provided from nature and photographs that show their sharp, pointy quality. Examples of obtuse angles are also shown through diagrams and images demonstrating their wide, flat appearance. 3. Different types of angles are defined by their degree of measurement, with right angles at 90 degrees, acute angles less than 90 degrees, and obtuse angles greater than 90 degrees.