Draw an angle of 110° with the help of a protractor and bisect it. Measure each angle.

(ii) Taking X as centre and with any radius, draw an arc to intersect the rays XA and XB at E and D, respectively.

(iii) Taking D and £ as centre and with the radius greater than 1/2 DE, draw arcs to intersect each other, say at F.

(iv) Draw the ray XC passing through F, which is the required bisector of the∠BXA.

On measuring each angle, we get

∠BXC =∠AXC = 55°