Question

Which of the following is done to draw an angle of 150 degrees using compasses and a ruler?

• A. 09:00
• B. 06:15
• C. 03:45
• D. Both A & B

Answer 1

The correct option is A

09:00

On bisecting two angles, the angle formed is half of the sum of the angles.
Option A: $\frac{{120}^{\circ }+{180}^{\circ }}{2}=\frac{{300}^{\circ }}{2}={150}^{\circ }$
Option B: $\frac{{60}^{\circ }+{180}^{\circ }}{2}=\frac{{240}^{\circ }}{2}={120}^{\circ }$
Option C: $\frac{0^{\circ }+{180}^{\circ }}{2}=\frac{{180}^{\circ }}{2}={90}^{\circ }$
Option D: $\frac{{360}^{\circ }}{2}={180}^{\circ }$

So, Bisecting the angle between 120 and 180 degrees gives us an angle of 150 degrees.