The order of rotational symmetry in the Fig. 12.15 given below is
(a) 4
(b) 8
(c) 6
(d) Infinitely many

Solution:

We know that

Number of times a figure fits onto itself in one full turn is known as the order of rotational symmetry.

The figure has a rotational symmetry of order 6.

Therefore, the order of rotational symmetry is 6.

✦ Try This: If the following figure shows a reflexive line of symmetry, complete the figure.

Given

The figure has a reflexive line of symmetry

It means that the missing part is exactly same as the other side which is given

Therefore, the completed figure is given above.

☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 14

NCERT Exemplar Class 7 Maths Chapter 12 Problem 5

The order of rotational symmetry in the Fig. 12.15 given below is: (a) 4, (b) 8, (c) 6, (d) Infinitely many

Summary:

The order of rotational symmetry in the Fig. 12.15 given below is 6.

☛ Related Questions:

• The order of rotational symmetry in the figure 12.16 given below is: (a) 4, (b) 2, (c) 1, (d) Infini . . . .
• The name of the given solid in Fig 12.17 is: (a) triangular pyramid, (b) rectangular pyramid, (c) re . . . .
• The name of the solid in Fig. 12.18 is: (a) triangular pyramid, (b) rectangular prism, (c) triangula . . . .