State the number of lines of symmetry for a semi-circle.

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answer is C.

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Detailed Solution

We have been given a semi circle.
A line of symmetry is a line that divides the figure in two equal parts.
Question Image

From the fig, we can see that the semicircle has only one line of symmetry passing through the centre of the circle.
Hence, a semicircle has only one line of symmetry.
Therefore, the correct answer is option (3).

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