Question

2. Construct the following angles with the help of
ruler and compasses :
120°​

Answer 1

answer:-- An angle of 120° is nothing but twice of an angle of 60∘

.Therefore, it can be constructed as follows :

Step 1: Draw any line PQ and take a point O on it.

Step 2: Place the pointer of the compasses at O and draw an arc of convenient radius which cuts the line at A.

Step 3: Without disturbing the radius on the compasses, draw an arc with A as centre which cuts the first arc at B.

Step 4: Again without disturbing the radius on the compasses and with B as centre, draw an arc which cuts the first arc at C.

Step 5: Join OC, ∠COA is the required angle whose

measure is 120∘.

hope it helps you ❤️...