Question

which of the following angle is cannot be constructed using ruler and compass only
150
60
65
75​

Answer 1

Answer:

60can be easily constructed by making a single arc on a supplementary angle using a compass.

15  can be constructed by bisecting 60    twice.

135  can be constructed by first drawing an angle of 90  and bisecting its obtuse side.

So 38  ∘ can not be constructed using rule and compass.