Question

Draw the angles using pair of compasses: 120° , 150° and 45°​

Answer 1

Answer:

HomeContactAboutSubject Index

Constructing 75° 105° 120° 135° 150° angles and more

On other pages there are instructions for constructing angles of 30°, 45°, 60° and 90°. By combining them you can construct other angles.

Adding angles

Angles can be effectively 'added' by constructing them so they share a side. This is shown in Constructing the sum of angles.

As an example, by first constructing a 30° angle and then a 45° angle, you will get a 75° angle. The table below shows some angles that can be obtained by summing simpler ones in various ways

To make Combine angles

75° 30° + 45°

105° 45° + 60°

120° 30° + 90° or 60° + 60°

135° 90° + 45°

150° 60° + 90°