Question

a student asks why, in a half - turn, the direction is never specified. how do you respond? why is direction never specified in a half - turn?
a. the result of a 180° rotation clockwise is the upside down image of the counterclockwise rotation in the same spot.
b. the result of a 180° rotation clockwise or counterclockwise is the same.
c. it is impossible to rotate an image counterclockwise.
d. most people simply assume clockwise.

Explanation:

A 180° rotation clockwise and a 180° rotation counter - clockwise result in the same final position. So, when we talk about a half - turn (which is 180°), the direction (clockwise or counter - clockwise) does not matter as the end - result is identical.

Answer:

B. The result of a 180° rotation clockwise or counterclockwise is the same.