Tell whether each figure has rotational symmetry. Write yes or no.

Solution:

We know that

Rotational symmetry is defined as a type of symmetry in which the image of a given shape is exactly identical to the original shape or image in a complete turn or a full angle rotation or 360° rotation.

It exists when a shape is turned, and the shape is identical to the original.

By considering this we know that

(a) Yes

(b) Yes

(c) No

(d) Yes

Therefore, the figures (a), (b) and (d) have rotational symmetry.

✦ Try This: Draw the net of a square pyramid with base as square of side 8 cm and slant edges 10 cm.

☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 10

NCERT Exemplar Class 7 Maths Chapter 12 Problem 119

Tell whether each figure has rotational symmetry. Write yes or no.

Summary:

The figures (a), (b) and (d) have rotational symmetry.

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