Types of Angles:
When line segments meet, different types of angles are formed.
a) An acute angle measures less than 90. COB is an acute angle.
c) An obtuse angle measures more than 90. but less than 180.
ROQ is an obtuse angle.
d) a reflex angle measures more than 180, but less than 360.
PQR is a reflex angle.
e) A zero angle measures 0. AOB is a zero angle.
f) A straight angle measures 180. AOB is a straight angle.
g) A complete angle measures 360. LMN is a complete angle.