Construction Of An Angle Using A Protractor
Let us draw an angle ABC of 30° with the help of a protractor. To draw ∠ABC, first draw a ray BC on a paper.
Now, place the protractor in such a way that the midpoint of the base line coincides with point B and base line overlaps exactly with ray BC of the angle. Since BC lies to the right of the midpoint of the base line, start reading the angles on the inner circle from Zero degree and mark at 30° as point A.
Now remove the protractor and join points A and B. ∠ABC is the required angle of 30°.
If ray BC lies to the left of the midpoint of the base line, start reading the angle on the outer circle from Zero and mark at 30° as point A. Join A and B. ∠ABC is the required angle of 30°.
