Suppose we are given angle A

We need to draw its copy


Let’s follow these steps

1.Draw a ray OP



  1. From point A, draw an arc of any radius
    intersecting the sides at B & C

  2. Using compass opened the same length,

    draw an arc with point O as the center,

    cutting OP at Q


  3. Now, back to our angle A.
    Open compass to length BC

  4. Keeping the same radius,
    Put pointed end of compass on point Q, and draw an arc.
    The point where it cuts previous arc is point R.

  5. Join OR

    Thus, ∠ ROQ is the copy of ∠ A

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.