Mathematics
Which of the following geometrical figures has exactly one line of symmetry?
(i) A rectangle
(ii) A semicircle
(iii) A regular pentagon
(iv) A rhombus
Symmetry
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Answer
A rectangle has 2 lines of symmetry, i.e., horizontal and vertical.
A semicircle has 1 line of symmetry, i.e., the perpendicular bisector of its diameter.
A regular pentagon has 5 lines of symmetry.
A rhombus has 2 lines of symmetry (along its diagonals).
Hence, Option 2 is the correct option.
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