# Rotational Symmetry - Star

Last updated at Sept. 22, 2021 by Teachoo

Last updated at Sept. 22, 2021 by Teachoo

Transcript

Rotational Symmetry - StarFor a metal, Here, the angle in the middle is Angle = (360°)/5 = 72° Suppose it rotates 72° about center The figure looks the same as previous Now suppose it rotates again 72° The figure looks the same as previous Again, it rotates 72° The figure looks the same as previous Again, it rotates 72° The figure looks the same as previous Once again, it rotates 72° The figure looks the same as previous Suppose it again rotates 72° The figure looks the same as previous Thus, Thus, in 1 full turn (i.e 360°) The figure is same as that of initial 5 turns So, we say that figure has rotational symmetry of order 5

Rotational Symmetry

Rotational Symmetry
Important

Rotational Symmetry - Wheel

Rotational Symmetry - Star Important You are here

Rotational Symmetry - Equilateral triangle

Rotational Symmetry – Line with Semicircles Important

Rotational Symmetry – Plus Sign

Rotational Symmetry – Square

Rotational Symmetry – Rectangle

Rotational Symmetry – Regular Pentagon Important

Ex 14.1, 1 Important

Ex 14.1, 2 (a)

Ex 14.1, 2 (b) Important

Ex 14.1, 2 (c) Important

Ex 14.1, 2 (d)

Ex 14.1, 2 (e) Important

About the Author

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.