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March 30, 2017

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Two planes that lie in parallel planes are ________. Answers: Always, Never, or Sometimes

I'm having some trouble on this one... I think it's sometimes...?

  • Geometry Honors (p.2) - ,

    sometimes what?

    Is there a typo here? The required answer is "always parallel".

    actually, the question is ill-worded. What does it mean for a plane to lie in a plane?

    I think they mean polygons, or plane figure, or region which lies in a plane.

    Associated with a plane is a normal vector, which is perpendicular to it. Parallel planes have normals which have the same or opposite direction. That is, the normals are parallel.

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