Parallel lines in space are coplanar. a. always b. sometimes c. never select the best answer from the choices provided

A. always

Step-by-step explanation:

we know that

Parallel lines  are those lines which never intersect to each other and always have same distance between them

Two lines always have same distance will only be possible when they lie on same plane

and we know that

same plane means co-planar

so, two lines will be parallel only if they are co-planar

It means that

Parallel lines are always co-planar

So,

Answer is

A. always

step-by-step explanation: h: (- 3, 6)

m: (1, - 2)

o: (7, 6)

r: (- 9, - 2)

midpoint of hm: (- 1, 2)

midpoint of or: (- 1, 2)

therefore, b is the midpoint of both diagonals bisect each other !

to prove the diagonals are perpendicular, show that the product of the slopes = - 1