geometry questions? best answer=10 pts ?

Question

plz answer:
answer using either ALWAYS, SOMETIMES, OR NEVER
1) the paths of 2 airplanes flying directly east west are ________________ coplanar
2) the paths of 2 airplanes flying directly north-south are _______________ skew.
3) the paths of an airplane flying directly north-sout and an airplane flying directly east-west are _______________ parallel 


thank you!!!!!

Zanti · Accepted Answer

I'm assuming we are disregarding the fact that the Earth is a sphere, not a plane.  So, to give the "flat Earth" answers:

1) Always.  There is always a plane containing two parallel lines.

2) Never.  As just said, there is always a plane containing two parallel lines.  So, the lines can't be skew, meaning they don't share a plane.

3)  Never.  The planes are flying in different directions, so they can't be parallel.

? · Answer

In cases 1 and 2, the paths are parallel, always coplanar, and never skew.
Case 3 is the opposite.  The paths are skew, never parallel, and not coplanar unless they intersect.

Sahil V · Answer

1) the path of 2 airplanes flying directly east west are always coplanar.
2) the path of 2 airplanes flying directly north-south are never skew.
3) the path of an 2 airplanes flying directly north-south an airplane flying directly east-west are sometimes parallel

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geometry questions? best answer=10 pts ?

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