Best Answer

draw a base and use this to draw an equilateral triangle

each angle of an equilateral triangle adds up to 60 degrees. To have an angle of 120 degree use this angle and then draw another side of a triangle next to it to get a 120 degree angle.

Q: Show how to construct a 120 degree angle?

Write your answer...

Submit

Still have questions?

Continue Learning about Math & Arithmetic

use a protractor and a ruler

Construct an equilateral triangle which will have 3 equal interior angles of 60 degrees and 3 equal exterior angles of 120 degrees

120 degrees is an obtuse angle

An obtuse angle

Yes but it can have 2 right angles and one 120 degree angle plus one 60 degree angle

Related questions

use a protractor and a ruler

Construct an equilateral triangle because each of its 3 exterior angles measures 120 degrees

Construct an equilateral triangle which will have 3 equal interior angles of 60 degrees and 3 equal exterior angles of 120 degrees

120 degrees is an obtuse angle

A 120 degree angle is an obtuse angle. This means that the angle is between 90 and 180 degrees.

An obtuse angle

120 degrees

Yes but it can have 2 right angles and one 120 degree angle plus one 60 degree angle

An angle of 120 degrees is an obtuse angle because it is greater than 90 but less than 180 degrees.

2.094

120

120 degrees.