Q. 14.0( 11 Votes )

With the help of

Answer :

Option (A):


37.5° = 1/2 × 75°


75° can be constructed with the help of a ruler and a compass.


Option (B):


40° = 1/2 × 20°


This is not possible.


20° cannot be constructed with the help of a ruler and a compass.


Option (C):


22.5° = 1/2 × 45°


45° can be constructed with the help of a ruler and a compass.


Option (D):


67.5° = 1/2 × 135° = 1/2 × (90° + 45°)


Both 90° and 45° can be constructed with the help of a ruler and a compass.


Ans. (B) It is not possible to construct an angle of 40° with the help of ruler and compass.

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