CBSE Book Class 5 Maths Activity 9

To find the lines of symmetry in the following shapes by paper folding.

(i) Square

(ii)Rectangle.

Learning Objective : To understand the idea of line symmetry and lines of symmetry.

Pre-requisite : Knowledge of lines of symmetry.

Materials Required : Coloured papers, a ruler and colored pens.

Procedure : 

Step 1. Cut a square of any dimension from a squared paper. Label it as ABCD. [Fig 9(a)]

Step 2. Fold the square cutout in such a way that BC falls on AD exactly.

Step 3. Unfold the paper and draw a line on the crease. [Fig. 9(b)]. This is one line of symmetry of the square ABCD. [Fig. 9(b)]

Step 4. Again fold the square cutout in such a way that AB falls on DC exactly.

Step 5. Unfold the paper and draw a line on the crease.[ Fig. 9(c)]

This is also another line of symmetry of the square ABCD.

Step 6. Fold the square cutout along the diagonal AC.

Step 7. Unfold the paper and draw a line on the crease.[ Fig. 9(d)]

This is also a line of symmetry of square ABCD

Step 8. Fold the square cutout along the diagonal BD.

Step 9. Unfold the paper and draw a line on the crease.[ Fig. 9(e)].

This is also one line of symmetry of square ABCD.

Please refer to the link below - CBSE Class 5 Maths Activity 9