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## Answers

2. With B as center and radius as taked in step 1, draw the arc to cut the previous arc at C

3. Again with C as center and with the same radius, draw one more arc to cut the frist arc at C

4.With C and D as centers , draw two arcs of equal radius to cut each other at E

5. join OE . Then, AOE=90

__Let BC be any line segment .__

__With B as center and any radius <BC , draw an arc which cuts BC at D.__

__With D as center and with the same radius , draw another arc which cuts the previous arc at E.__

__With E as center as with the same radius, draw another arc which cuts the 1st arc at F.__

__With E and F as centers and with any radius >1/2 EF, draw 2 arcs which cut each other at A(Both arcs should be drawn with equal radii).__

__Join A and B , then Angle ABC=90* is the required angle.__