Which of the following figure has 7 lines of symmetry?
Regular hexagon
Regular heptagon
Regular octagon
Regular triangle
Number of lines of symmetry of a regular polygon is equal to its number of sides.
Since, regular heptagon has 7 sides, it has 7 lines of symmetry.
Which of the following figures has/have two lines of symmetry?
Which of the following figure has only one line of symmetry?
Which of the following plane figures has a line of symmetry/symmetries?