Q3 of 19 Page 275

If a figure has two or more lines of symmetry, should it have rotational symmetry of order more than 1?

Yes, a figure having two or more lines of symmetry will have rotational symmetry of order more than one since, both the line symmetry and the rotational symmetry are symmetric about the centre axis.


More from this chapter

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1

Name any two figures that have both line symmetry and rotational symmetry.

 2

Draw, wherever possible, a rough sketch of

a) a triangle with both line and rotational symmetries of order more than 1.


b) a triangle with only line symmetry and no rotational symmetry of order more than 1.


c) a quadrilateral with a rotational symmetry of order more than 1 but not a line symmetry.


d) a quadrilateral with line symmetry but not a rotational symmetry of order more than 1.

 4

Fill in the blanks:



















































Shapes



Centre of Rotation



Order of


Rotation



Angle of


Rotation



Square






Rectangle






Rhombus






Equilateral


Triangle






Regular


Hexagon






Circle






Semi-circle





 5

Name the quadrilaterals which have both line and rotational symmetry of order more than 1.