Page 268 - Ganit Kaushal

III. State whether the following statements are True (T) or False (F).

1. The perpendicular bisector of the line segment is its line of symmetry.

2. The letter A has a vertical line of symmetry.
3. The letter B has a horizontal line of symmetry.
4. The figure has 4 lines of symmetry.

5. A regular hexagon has 3 lines of symmetry.
6. The least angle of symmetry of a shape is a factor of 360°.

7. If a figure has both horizontal and vertical lines of symmetry, then it always has rotational symmetry.
IV. Solve the following questions.

1. Draw a rough figure of the shape of (a) a protractor, (b) a regular hexagon.
Show how many lines of symmetry they possess.

2. Find the number of lines of symmetry in the following shapes:

(a) (b)

3. Which of these two shapes have rotational symmetry?
Find the lines of symmetry, angles of symmetry, and least angle of symmetry for these shapes.
(NCERT)

(a) (b)

4. Which letter of the English alphabet has unlimited lines of symmetry?
5. (a) The letter D of the English alphabet has how many lines of symmetry?

(b) What is the number of lines of symmetry in an arrowhead?
(c) How many lines of symmetry does a regular heptagon have?
6. Examine the number of lines of symmetry, order of rotational symmetry, and least angle of symmetry
for each of the following figures:

(a) (b) (c)

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