Rotational Symmetry of Equailateral Triangle - with Order [Teachoo] - Rotational Symmetry

part 2 - Rotational Symmetry - Equilateral triangle - Rotational Symmetry - Concept wise - Chapter 12 Class 7 Symmetry
part 3 - Rotational Symmetry - Equilateral triangle - Rotational Symmetry - Concept wise - Chapter 12 Class 7 Symmetry part 4 - Rotational Symmetry - Equilateral triangle - Rotational Symmetry - Concept wise - Chapter 12 Class 7 Symmetry

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Transcript

Rotational Symmetry - Equilateral triangleSuppose it rotates 120° The figure looks the same as previous And, Suppose it again rotates 120° The figure looks the same as previous Thus, Thus, in 1 full turn (i.e 360°) The figure is same as that of initial 3 turns So, we say that figure has rotational symmetry of order 3

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