NCERT Book Class 5 Mathematics (Math Mela) Chapter 10 Symmetrical Designs

Chapter
Symmetrical
10 Designs

Alphabet Cutout

Prem and Manu want to paste ‘Happy Birthday’ cutouts on a wall for Lali’s
birthday. While preparing cutouts of letters, they observe that some letters
can be cut out in an easy way.
They remember that they learnt about reflection symmetry and lines of
symmetry in Grade 4. They used their knowledge of lines of symmetry to
make the cutouts. The letter A has a vertical line of symmetry. So, to cut
Step 1 Step 2
out the letter ‘A’—
1. Fold a paper in half.
2. Draw half of the letter A along the fold.
3. Cut along the outline.
Step 3 Step 4
4. Open the paper to see the full letter A.

The letter H has two lines of symmetry. Step 1 Step 2
1. Fold the paper into one-fourth (once
vertically, once horizontally).
2. Draw one-fourth of the letter H along the
fold.
Step 3 Step 4
3. Cut along the outline.
4. Open the paper to see the full letter H.

Which of the following alphabet cutouts can be made by just drawing half ( 1 )
2
or quarter ( 1 ) of the letter? You can do it by drawing lines of symmetry on
4
the letters.
E N X T K V O
Which of the letters have a horizontal line of symmetry? _________________
Which of the letters have a vertical line of symmetry? ____________________
Which letters have both vertical and horizontal lines of symmetry?________

Use lines of symmetry to make paper cutouts of diya, boat, and other
designs. Look along the border of the page to find the pictures.