The document RD Sharma Solutions -Ex-17.4, Symmetry, Class 6, Maths Class 6 Notes | EduRev is a part of the Class 6 Course RD Sharma Solutions for Class 6 Mathematics.

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**Q. 1. The total number of lines of symmetry of a scalene triangle is**

**Sol: **(d) none of these

This is because the line of symmetry of a scalene triangle is 0.

**Q. 2. The total number of lines of symmetry of an isosceles triangle is**

**Sol:** (a) 1

**Q. 3. An equilateral triangle is symmetrical about each of its**

**Sol: **(d) all the above

In equilateral triangle altitudes, angle bisectors and medians are all the same.

**Q. 4. The total number of lines of symmetry of a square is**

**Sol:** (d) 4

**Q. 5. A rhombus is symmetrical about**

**Sol:** (a) Each of its diagonals

**Q. 6. The number of lines of symmetry of a rectangle is**

**Sol: **(b) 2

**Q. 7. The number of lines of symmetry of a kite is**

**Sol:** (b) 1

**Q. 8. The number of lines of symmetry of a circle is**

**Sol: **(d) Unlimited

A circle has an infinite number of symmetry all along the diameters. It has an infinite number of diameters

**Q. 9. The number of lines of symmetry of a regular hexagon is**

**Sol:** (c) 6

**Q. 10. The number of lines of symmetry of an n â€“ sided regular polygon is**

**Sol: **(a) n

The number of lines of symmetry of a regular polygon is equal to the sides of the polygon. If it has â€˜nâ€™ number of sides, then there are â€˜nâ€™ lines of symmetry

**Q. 11. The number of lines of symmetry of the letter O of the English alphabet is**

**Sol: **(c) 2

**Q. 12. The number of lines of symmetry of the letter Z of the English alphabet is**

**Sol: **(a) 0

Z has no line of symmetry