Page 223 - Start Up Mathematics_7

(c) (d)

EXERCISE 13.1

1. Write two letters each of English alphabet (in capital) having reflectional symmetry (i.e.,
symmetry related to mirror reflection) about:

(a) a vertical line (b) a horizontal line (c) both horizontal and vertical lines
2. Give four examples of figures having no line of symmetry.

3. What other name can you give to the line of symmetry of:
(a) an isosceles triangle (b) a rhombus (c) a circle (d) an arc

4. Copy the figures with punched holes and find the axes of symmetry for them:

(a) (b) (c) (d)

(e) (f) (g) (h)

5. In the following figures, locate the position of the missing holes in order to make them
symmetrical about the dotted line.

(a) (b) (c) (d) (e)

6. Complete the following figures taking dotted lines as the mirror lines.

(a) (b) (c) (d) (e)

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