Construct $∠ A B C = 120^{o}$ . Through A draw a line parallel to BC.

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Solution

Steps of construction:
1. Draw a line segment BC of any measure.
2. By taking B as centre, draw an angle of $120^{o}$ with the help of compass and ruler.
3. Now at A, we will draw a line parallel to BC by making $60^{o}$ at A.

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Construct ∠ABC=120o. Through A draw a line parallel to BC.

Steps of construction:1. Draw a line segment BC of any measure.2. By taking B as centre, draw an angle of 120o with the help of compass and ruler.3. Now at A, we will draw a line parallel to BC by making 60o at A.

Construct $∠ A B C = 120^{o}$ . Through A draw a line parallel to BC.

Steps of construction:
1. Draw a line segment BC of any measure.
2. By taking B as centre, draw an angle of $120^{o}$ with the help of compass and ruler.
3. Now at A, we will draw a line parallel to BC by making $60^{o}$ at A.