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Constructing an Angle of a Given Measure

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Constructing an angle of a given measure:

1) Suppose we want an angle of measure 40°.

Here are the steps to follow:

Step 1: Draw `bar"AB"` of any length.

Step 2: Place the centre of the protractor at A and the zero edge along `bar"AB"`.

Step 3: Start with zero near B. Mark point C at 40°.

Step 4: Join AC. ∠BAC is the required angle.

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