ACTIVITY – PRACTICAL GEOMETRY
Objective:
To draw a bisector of a given angle by paper folding method.
Materials Required:
Tracing paper, a pencil, ruler, eraser, sketch pens, a pair of scissors.
Procedure:
Let us draw the bisector of given angle AOB = 70 °
2. Cut out a piece of the tracing paper containing angle AOB .
3. Fold the tracing paper through O such that the arm OB of the angle AOB coincides with the arm OA.
Press the fold so that a crease is formed as shown in Fig. 2.
4. Unfold the tracing paper. Draw the ray OD along the crease as shown by black colour in Fig.
Using a protractor measure ∠BOD and ∠ AOD. You will see that ∠ AOD = ∠ BOD = 35ΒΊ.Hence, (ππ) ⃗ is the bisector of ∠ AOB.
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