Page 259 - Start Up Mathematics_6

Exemplar Problems

1. In the following figures, the figure that is not symmetric with respect to any line is:

(i) (ii) (iii) (iv)
(a) (i) (b) (ii) (c) (iii) (d) (iv)
2. The number of lines of symmetry in a 30°- 60°- 90° set square is:
(a) 0 (b) 1 (c) 2 (d) 3

3. A regular octagon has 10 lines of symmetry. (True/False)
4. The number of lines of symmetry in a rectangle and a rhombus are __________.
5. If an angle of measure 80° is reflected in a line of symmetry, then the reflection is an
__________ of measure __________.

6. The digits having only two lines of symmetry are __________ and __________.

7. The number of lines of symmetry in the given figure is __________.

8. If a line segment of length 5 cm is reflected in a line of symmetry (mirror),
then its reflection (image) is a __________ of length __________.
9. Write the letters of the word ALGEBRA which have no line of symmetry.

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