Q. 2 B4.3( 4 Votes )

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Answer :

We need to draw a triangle ABC with ABC = 120°

B = 120°

Since we are given only one angle to draw a triangle we need to assume the other two angles of a triangle.

It is impossible to draw a triangle with only one angle.

A + B + C = 180°

A + C = 60°

Let’s assume A as 30° and C as 30°

1. Let us take AB as base of the triangle.

2. So, draw a line segment and name it as AB (Here length is not specified so we can assume that also.)

3. Place the protractor at B and draw a ray with 120°

4. Place the protractor at A and draw a ray with 30°

5. 2 Rays will intercept at some point and name that point as C

6. Thus, we have drawn a triangle with ABC = 120°.

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<span lang="EN-USMaharashtra Board - Geometry Papers