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how to construct 180 degree angle using compass and ruler

Mark a point ‘O’ on a straight line ‘l’.

:

(i) With ‘O’ as center draw arcs of any radius to cut the line l at A and B.

(ii) Now angle AOB = 180°.

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**

Mark a point ‘O’ on a straight line ‘l’.

:

(i) With ‘O’ as center draw arcs of any radius to cut the line l at A and B.

(ii) Now angle AOB = 180°.

**
**

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