Krishna
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Skill 1:  Place the compass at one end of line segment.


Skill 2: Adjust the compass to slightly longer than half the line segment length


Skill 3: Draw arcs above and below the line.

                        


Skill 4: Keeping the same compass width, draw arcs from other end of line.


                        


Skill 5: Place ruler where the arcs cross, and draw the line segment.