Q: How do you construct a 120 degree angle?

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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.

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

With a protractor

A 40 degree acute angle can be constructed with a straight edge and a protractor.

Related questions

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.

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

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

120 degrees is an obtuse angle

With a protractor

Use a straight edge and a protractor to construct an acute angle of 65 degrees

A 40 degree acute angle can be constructed with a straight edge and a protractor.

Use a protractor.

An obtuse angle

Use a protractor or bisect a 45 degree angle with a compass and a straight edge

by 60 degree and 90 degree