Jharne De and Ranjana Kumar Solutions for Chapter: Symmetry, Exercise 2: EXERCISE 11.1

Visualise the following figure on rotation through the angles $90°,180°,270°,360°$ and write its order of rotational symmetry.

Identify the figure.
A triangle with both reflection symmetry and rotational symmetry

Identify the triangle with no rotational symmetry. [Equilateral/Isosceles/Scalene]

Identify the figure.

A quadrilateral with reflection symmetry but no rotational symmetry.

A rhombus has rotational symmetry of order $3$.

A parallelogram has rotational symmetry of order $2$.

A semicircle has rotational symmetry of infinite order.

A scalene triangle has rotational symmetry of order $1$.