Question

Construct an angle ${150}^{\circ }$ using protractor and scale.

Answer 1

Step-$1:$ Draw a line segment $OA$

Step-$2:$ Place the midpoint of the protractor at point $O$.

Step-$3:$ On $OA$, from the right, start counting from $0^{\circ }$ in the ascending order and mark a point $B$ using a sharp pencil at the point showing ${150}^{\circ }$ on the semi-circular edge of the protractor.

Step-$4:$ Remove the protractor and join $OB$ using the scale.

Hence, $\angle AOB={150}^{\circ }$ is the required angle.