Question

Draw a triangle ABC in which angle =120 degree and AB =AC =3cm . Draw the bisecter of angle A.

Answer 1

First of all, Construct a line segment AB of 3cm. Then, from A construct a line AX measuring 120�. Keep your compasses on A and construct an arc of 3cm on the ray AX. Join the arc with B to get the desired triangle. To bisect it, there are 2 methods,1st : Measure 60�(120/2=60) with a protractor and draw it.2nd : Bisect 120 by:With A as center, and any radius, draw an arc intersecting the arms of AX and Mark them however you want for instance, we'll name it as EF. With radius more than 1/2 of EF Construct an arc on both the sides respectively. Join A with the arc made to obtain 60�!Sorry but I couldn't make it much simple as if I was in front of you.