– Distances measured to the right of the pole or optical center and those to the left of the pole or optical center are ……and …… respectively.
A. Positive, Negative
B. Negative, Positive
C. Positive, Positive
D. Negative, Negative
Answer:A
– Distances measured to the right of the pole or optical center and those to the left of the pole or optical center are ……and …… respectively.
A. Positive, Negative B. Negative, Positive C. Positive, Positive D. Negative, Negative