Chapter 14, Problem 9CR

To determine

Tofind: the same rotations of ${\Re }_{o,140}$ .

Answer to Problem 9CR

The same rotations are ${\Re }_{o,500}\text{ and }{\Re }_{o,-220}$ .

Explanation of Solution

Given information:

The dilation is $D_{O,2}$ .

Calculation: to find the same rotations, the sum of both rotations should be the multiplicative of $180$ ,

Thus, the same rotations are ${\Re }_{o,500}\text{ and }{\Re }_{o,-220}$ .