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How to draw an angle of 100 degree with compass? Is it possible?
1. Step 1:
Draw a line segment PQ. With centre O, Draw an arc of any length using your compass and label it as AB.


2. Step 2:
Keeping your compass wide open with the same length, draw an arc S on AB. This will be your normal 60 Degree angle arc. (If you join S to O, you will get an angle measuring 60 degrees i.e. Angle SOB).


3. Step 3:
Bisect the 60 degree angle and name the point of intersection as J. J will be your normal 30 degree arc. (After bisecting the 60 degree angle, if you join J to O you will get an angle measuring 30 degrees i.e. Angle JOB).
4. Step 4:
Join the arc J to A,  Angle JAB is 20 degree angle.


similarly we can draw 100 degree using compass.


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