Question

while naming an angle using 3. It is mandatory to place the which point in the middle​

Answer 1

common vertex is place in the middle

Step-by-step explanation:

while naming the angles it is required to place the vertex is always in the center

The measure of the angle is written between the arms of the angle , close to the vertex .

The naming of the angle consist of the three letters , with the vertex pointed listed in the middle

for example :  angle ABC , here , B represents the common vertex and the angle

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