Question

A pentagon is transformed according to the rule R0, 180°. Which is another way to state the transformation? (x, y) → (–x, –y) (x, y) → (–y –x) (x, y) → (x, –y) (x, y) → (–x, y)

Answer 1

Rule R0, 180°

This is rotation

Center of rotation (0, 0)

Angle of rotation = 180°

This rotation maps: 

x onto -x

and

y onto -y

So, another way to state the transformation is:

 (x, y) → (–x, –y)