planes are not bad because they can help us to go somewhere else from a place and because of weather conditions planes are out of control
before going first see if the weather is good or in a bad condition
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I personally don't think they are bad, but assuming they are, it would be because of their pollution.
planes can sometimes be good but sometimes bad
Good for their day. Obsolete today.
it can fly
two planes intersect in one line, or the planes could be parallel. by the way there is no such thing as skew planes...
The angle between two planes when the planes intersect at a point is the acute angle fixed by the normal vectors of the planes.