| Shape | Rough figure | Number of lines of symmetry |
| Equilateral triangle | 3 | |
 | ||
| Square | ||
| Rectangle | ||
| Isosceles triangle | ||
| Rhombus | ||
| Circle | ||
Answer:
First, we draw rough figure of each shape. (i) A rough figure of an equilateral triangle is given below: 
In equilateral triangle, \[{{l}_{1}},{{l}_{2}}\] and \[{{l}_{3}}\]are three lines of symmetry. (ii) A rough figure of a square is given below: 
In square, \[{{l}_{1}},{{l}_{2}},{{l}_{3}}\]and \[{{l}_{4}}\]are four lines of symmetry. (iii) A rough figure of a rectangle is given below: 
In rectangle, \[{{l}_{1}}\] and \[{{l}_{2}}\] are two lines of symmetry. (iv) A rough figure of an isosceles triangle is given below: 
In isosceles triangle, \[{{l}_{1}}\]is the only line of symmetry. (v) A rough figure of a rhombus is given below 
In rhombus, \[{{l}_{1}}\] and \[{{l}_{2}}\] are two lilies of symmetry. (vi) A rough figure of a circle is given, below: 
In circle, there are infinite lines of symmetry. Now, the complete table is given below:
Shape Rough figure Number of lines of symmetry Equilateral triangle 
3 Square 
4 Rectangle 
2 Isosceles triangle 
1 Rhombus 
2 Circle 
Infinite
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