An angle is formed by two rays with a common end point. The rays forming the angle are called the sides of the angle and the common end point is known as the vertex of the angle.
The sides of the angle are AB and AC.
The vertex is A.
|How to name the angle?
We can name the angle
Degree is the unit used to represent an angle measure and it denoted by the symbol º. A full angle formed around a point measures 360º. The angle at point are classified based on their measures as follows:
|1. Acute angle||0º < x < 90º|
|2. Right angle||x = 90º|
|3. Obtuse angle||90º < x < 180º|
|4. Straight angle||x =180º|
|5. Reflex angle||180º < x < 360º|
Let us see few examples on each of the above mentioned type.