how to trisect 90° angle?
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30,30,30.three equal parts
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1) draw a semi circle.
2) then keeping the compass at the line where the semi circle cuts.draw an arc on the semi circle.
3)keeping the compass at the point where are cuts .draw another arc on the semi circle.
4) now keeping the compass at both the arc.draw arcs which cuts each other.
5) join the point to the center of the circle.
6) the first arc that u cut was 60.now keeping the compass at the arc and the the point where the circle cuts the line . draw arcs.
7) join the point to the center.
2) then keeping the compass at the line where the semi circle cuts.draw an arc on the semi circle.
3)keeping the compass at the point where are cuts .draw another arc on the semi circle.
4) now keeping the compass at both the arc.draw arcs which cuts each other.
5) join the point to the center of the circle.
6) the first arc that u cut was 60.now keeping the compass at the arc and the the point where the circle cuts the line . draw arcs.
7) join the point to the center.
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