Question

Draw an angle of ${130}^{\circ }$ with the help of a protector and bisect it.

Answer 1

Steps of construction:
Step 1: Make an angle of ${130}^{\circ }$ by using a protractor.
Step 2: Take B as a centre and draw an arc which intersects BC and BA at E and D respectively.
Step 3: Take D and E as centres and draw arcs (without changing the span of the compass) such that they intersect each other at point F.
Step 4: Draw a line BG which passes through F.
Thus ray BG is the required bisector of $\angle CBA={130}^{\circ }$.