S.chand publication New Learning Composite mathematics solution of class 7 Chapter 12 Reflection and Rotation Symmetry Exercise 12B

 Exercise 12B

Question 1

Tell whether each transformation appears to be a rotation. Explain

(a) This transformation appears to be a rotation. Because it turns a shape through an angle about a fixed point.

(b) This transformation doesn't appears to be a rotation. Because it doesn't turns a shape through an angle about a fixed point.

(c) This transformation appears to be a rotation. Because it turns a shape through an angle.

(d) This transformation appears to be a rotation. Because it turns a shape through an angle.

Question 2

Draw a 90° clockwise rotation about the point

(a) Figure to be added

(b) Figure to be added

(c) Figure to be added

Question 4

Identify the transformation in the figure. If it is a reflection, identify the line if reflection. If it is a rotation, give the angle and direction of rotation

Ans : It is a rotation 90° clockwise rotation