How many of the following letters have rotational symmetry of order more than $1$ ?
R, B, F, H, O, P, S, W, X, Z, N

4

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9

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5

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8

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Solution

The correct option is C $5$
The central point is the point O.
The order of rotational symmetry = 2
(Angles of rotation =180°, 360°)

The central point is the point O shown.
The order of rotational symmetry = 2
(Angles of rotation =180°, 360°)

The central point is the point O shown.
The order of rotational symmetry = 2
(Angles of rotation =180°, 360°)

The order of rotational symmetry of letter O is more than 1.

The order of rotational symmetry of letter X is more than 1.
$\therefore $ The letters having rotational symmetry of order more than 1 are H, X, N, O, X.

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How many of the following letters have rotational symmetry of order more than 1?R, B, F, H, O, P, S, W, X, Z, N

How many of the following letters have rotational symmetry of order more than $1$ ?
R, B, F, H, O, P, S, W, X, Z, N