Answer: what do need help on
Step-by-step explanation:
The only math term I can think of is geometry and it means when a solid is cut through parallel to the base.
EDIT: After further research since it was all I could think of. This is the only math term for what you are looking for.
Answer with explanation:
⇒A segment ,
is equivalent to
.
⇒We can assert this by this way, if Distance between Two points A and B is 6 unit, then Distance between B and A will be 6 unit also.
So,

FM−→−⇒MF−→−
Option A