7. An angle is formed when two rays
originate from the same endpoint .The
rays making an angle are called arms of
the angle and the end point is called the
vertex of the angle .
26. Acute angle
An acute angle measures between
0° and 90°.
Right angle
Right angle measures exactly equal
to 90°.
Obtuse angle
An angle measures greater than
90° but less than 180°.
27. Construct the some more
examples of acute
angle,obtuse angle & right
angle.
28. 1. What is Acute angle?
2. What is obtuse angle?
3.What is right angle?
41. Straight angle
An angle whose measures exactly
equal to 180°.
Reflex angle
A reflex angle whose measures more
than 180° and less than 360°.
Complete angle
An angle whose measure is exactly
eequal to 360°.