Question

by using ruler and compass construct an angle of 135 and bisect it

Answer 1

steps
1)draw a line segment
2)draw angle of 120° with use of compass
3)after that with same radius cut an arc from 180° and one from 120°.
4) you will get 150°.(it will come between 180&120°)
5) then again cut an arc from 150°cut an arc and from 120° cut an arc join it . you will get 135° (it will come between 150 & 120°