Question

With the help of a ruler and a compass, it is possible to construct an angle of

• A.
  40°
• B.
  32.5°
• C.
  135°
• D.
  42.5°

Answer 1

The correct option is C

135°
135° = 90° + 45°
$={90}^{\circ }+\left(\frac{{180}^{\circ }-{90}^{\circ }}{2}\right)$
Thus, the angle 135° can be constructed with the help of a ruler and a compass.
Hence, the correct answer is option (c).