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use a protractor and a ruler
use trisection method
I generally use a pencil and ruler. To construct the right angle to draw it I also use compasses. To measure the right angle to draw it I also use a protractor.
A ruler. Add a line to make the angle into a triangle, measure the sides and use trigonometry.
create a 'v' parralel to the 'v' of your angle using the width of your ruler, join the two apexes and continue the line to biscect the angle.