Question

how to construct 90,45,30,22 1/2,15,75,105,135 degrees without using protractor. use only ruler and compass​

Answer 1

Answer:

for 60 degree on a straight line AB. draw an Arc then from the B point from compass cut on the first angle

for 45 degree draw an Arc with it draw 60 and 120 degree angles now from 60 put the compass and draw a curve line and same from 120 draw a curve line now you will get 90 degree same extend the compass by putting point on zero degree and xtend till the 9p degree where Arc is placed now from zero put a cross and from 90 put a cross if they meet each other then the following angle is 45 degree now from 45 put a cross and from zero put a cross if they meet each other then the following angle is 22 and a half degree