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Bisect a straight angle, using ruler and compasses. Measure each part.

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Steps of construction:


  • Draw a line AB of any length using ruler.
  • Draw an arc of any radius taking center O  which cuts the line AB at points P and Q.
  • Draw arcs at center P and Q with the same radius more than half of PQ which intersect each other at R.
  • Draw a line that joins OR and produce it to any point C.

Now we can measure anngle \angle \mathrm{BOC}=\angle A O C=90^{\circ}

Posted by

Ravindra Pindel

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