Respuesta :
The correct answer is:
lines a and b must be parallel
See the attached figure.
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Note:
1. skewed lines cannot be in one plane
2. If a and b are perpendicular, they shoulde be in plane Q or R
lines a and b must be parallel
See the attached figure.
=======================================
Note:
1. skewed lines cannot be in one plane
2. If a and b are perpendicular, they shoulde be in plane Q or R
