Answer:
when two rays meet at the same endpoint, they form angle. The endpoint of the two rays is called the vertex.
The numer of degrees in an angle determines what kind of angle it is.
what are the kinds of angles?
1. Angle AVC is a right angle.
It forms a square corner.
It's measure is exactly 90°
2. Angle QPT is an acute angle.
It is smaller than a right angle.
If's measure is less than 90°.
3. Angle DEI is an obtuse angle.
It is bigger than the right and acute angles.
It's measure is greater than 90° but less than 180°.
