Angle:
An angle equal to 14 turn (90° or π2 radians) is called a right angle. Two lines that form a right angle are said to be normal, orthogonal, or perpendicular. Angles larger than a right angle and smaller than a straight angle (between 90°and 180°) are called obtuse angles ("obtuse" meaning "blunt").
Types of Angles:
In Geometry, there are three types of angles:
- Acute angle: An angle between 0 and 90 degrees.
- Right angle: An 90 degree angle.
- Obtuse angle: An angle between 90 and 180 degrees.
- Straight angle: A 180 degree angle.
Here are a few examples of angles: