Let us consider a square ABCD.

Obviously, each of the above four times, the figure fits on-to-it self.
∴ It has a rotational symmetry of order 4.

Since, each of the above three positions fits into the original.
∴ It has a rotational symmetry of order 3.

After rotating by 60° about a centre, a figure looks exactly the same as its original position. This will also happen for the figure at angles 120°,180°,240°, 300°,360°respectively

(a) Rectangular Pyramid
(b) Triangular Prism

Isosceles triangle has only one line of symmetry

A square has a rotational symmetry of order 4 about its centre, In this case:
(a) The centre of rotation is the centre of the square.
(b) The angle of rotation is 90°.
(c) The direction of rotation is clock wise.
(d) The order is 4.

(a) Median of an isosceles triangle.
(b) Diameter of a circle

When a figure has two or more lines of symmetry, then the figure should have a rotational symmetry of order more than 1 e.g., square.

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After rotating by 60° about a centre, a figure looks exactly the same as its original position. This will also happen for the figure at angles 120°, 180°,240°,300° and 360°, respectively.

The name of quadrilateral having both line of symmetry and rotational symmetry of order more than 1 is square.
It has 4 lines of symmetry and rotational symmetry of order 4.

Two figures that have both line symmetry and rotational symmetry are an equilateral triangle and a circle.

With respect to the given line(s) of symmetry, the other hole(s) are marked in the figures given below:

On copying the figure with punched holes, the axis of symmetry corresponding to the punched holes are shown by dotted lines in the figures given below

On copying the figure with punched holes, the axis of symmetry corresponding to the punched holes are shown by dotted lines in the figures given below