Name: Line and Rotational Symmetry
Uploaded: 2019-07-19
Duration: 11 min 22 s
Description: Do you know that symmetry is something that has exactly equal parts? Let us learn more about line and rotational symmetry by watching this video.

Question

Which capital letters have just one line of symmetry? Which capital letters have a rotational symmetry of order $2$ ? Fill in the following table:

Alphabet letters	Line Symmetry	Number of lines of symmetry	Rotational symmetry	Order of rotational symmetry
$Z$	No	$0$	Yes	$2$
$S$
$H$	Yes		Yes
$O$	Yes		Yes
$E$	Yes
$N$			Yes
$C$

Accepted Answer

The rotational symmetry of a shape explains that when an object is rotated on its own axis, the shape of the object looks the same. Many geometrical shapes appear to be symmetrical when they are rotated 180 degrees or with some angles, clockwise or anticlockwise.

Order of rotation of a figure is the number of the exact replicas of the figure we would get if we rotate the figure over a course of $360$ degree.

The line of symmetry is the line which passes through the centre of the object or any shape. It is considered as the axis or imaginary line of the object. In geometry, you must have learned well about the term symmetry which is defined as a balanced and a proportionate similarity found in two halves of an object, that is, one-half is the mirror image of the other half.

Alphabet letters Line Symmetry Number of lines of symmetry Rotational symmetry Order of rotational symmetry

$0$ No $2$ Yes $S$

$S$ No $0$ Yes $2$

$H$ Yes $O$ Yes $2$

$O$ Yes infinite Yes infinite

$E$ Yes $1$ No $0$

$C$ No $0$ Yes $2$

$C$ Yes $1$ No $0$

Shape	Centre of Rotation	Order of Rotation	Angle of Rotation
Square	_____	_____	_____

Important Questions on Symmetry

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