Find the number of rotational symmetry in case of ceiling fan.

Find the number of rotations of an equilateral triangle.

For the given figure, find the centre of rotational symmetry, angle of symmetry and degree of rotational symmetry.

For the given figure, find the centre of rotational symmetry, angle of symmetry and degree of rotational symmetry.

For the given figure, find the centre of rotational symmetry, angle of symmetry and degree of rotational symmetry.

For the given figure, find the centre of rotational symmetry, angle of symmetry and degree of rotational symmetry.

Let us draw plane figures, then cut them off to find if they have rotational symmetry? Let's write in the blank space given below and try to verify them.

Plane figure	Let's draw a small figure	Centre of rotation	Angle of rotation symmetry	Degree of rotation symmetry
Equilateral triangle	_____	_____	_____	_____
Square		Point of intersection of diagonals or intersection of the lines joining the midpoints of opposite sides	_____	_____
Rectangle		_____	_____	_____
Trapezium	_____	_____	_____	_____
Parallelogram	_____	Point of intersection of the diagonals	$180°$	$2$
Rhombus	_____	Point of intersection of the diagonals	$180°$	$2$
Regular pentagon		Intersection of lines joining the vertex with mid-point of opposite side.	$\frac{360°}{5}=72°$	_____
Regular hexagon		_____	_____	_____