Question

1. a. draw the concentric circles through corresponding points with center at point d. b. estimate the angle of rotation.

Explanation:

Step1: Drawing concentric circles

Use a compass centered at D to draw circles through A and A', B and B', C and C'.

Step2: Estimating rotation angle

Count grid - square displacements of corresponding points. The angle is approximately 90° counter - clockwise.

Answer:

a. Use compass to draw concentric circles.
b. Approximately 90° counter - clockwise.