Angle And Its Classification

Two rays with a common end point form an angle.

O is called the vertex of the angle.

OA and OB are called arms of the angle.

Classification Of Angles :

Acute angle : An angle whose measure is more than 0 degree but less than 90 degree is called an acute angle.

Right angle : An angle whose measure is 90 degree called a right angle.

Obtuse angle : An angle whose measure is greater than 90 degree and less than 180 degree is called an obtuse angle.

Straight angle : An angle whose measure is 180 degree is called a straight angle.

Reflex angle : An angle whose measure is greater than 180 degree but less than 360 degree is called reflex angle.

Complete angle : An angle whose measure is 360 degree is called a complete angle.

Scroll to Top