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Question
State the number of lines of symmetry for an equilateral triangle figure.
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Solution
There are 3 lines of symmetry in an equilateral triangle.
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| (a) | (b) | (c) |
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| (a) | (b) | (c) |
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| Shape | Equilateral Triangle  |
Square |
Regular pentagon  |
Regular hexagon  |
Regular octagon  |
| Number of lines of symmetry | |||||
| Order of rotational symmetry |
i) A regular polygon of 10 sides will have _________ lines of symmetry
ii) If a regular polygon has 10 lines of symmetry, then its order of rotational symmetry is ___________
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___________ ___________
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Draw an isosceles triangle with each of equal sides of length 3 cm and the angle between them as 45°.
