anonymous
  • anonymous
does anyone understand proofs?
Geometry
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
What do you need help on?
anonymous
  • anonymous
i just don't get how they work at all,,,
anonymous
  • anonymous
prove theorem 5-1: if two parallel planes are cut by a third plane, thenn the lines of intersection are parallel

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anonymous
  • anonymous
given: planes CDE and ABF ae parallel. Plane ABC is a transversal intersecting both planes
anonymous
  • anonymous
I don't know what postulates and axioms you're working from, but here: We shall say that \(l\) is the line of intersection between \(ABC\) and \(CDE\). Proof: Both lines \(l\) and \(AB\) are on the plane \(ABC\). But, since \(l\) is also on plane \(CDE\), \(AB\) is on \(ABF\), and \(CDE \;\|\; ABF\), these will never meet. Thus, \(AB \;\|\;l\). Q.E.D.
anonymous
  • anonymous
is there an easy way to make these make sense??
anonymous
  • anonymous
Draw it out and then try to logically reason why it could be the case.
precal
  • precal
Math is like music. We have to learn the basics of each one. The more you practice it, the easier it becomes.
anonymous
  • anonymous
Also, replacing all of the symbols with actual words or phrases, it helps out, quite a bit, if it all looks daunting at first.
anonymous
  • anonymous
they just don't make sense to me :'(
precal
  • precal
you are in good company here but I have learn that talking about it helps. Just like in music, math also, has its patterns.
anonymous
  • anonymous
music makes sense!
anonymous
  • anonymous
They both do, you just have to learn each one (Trust me, I also play a few instruments, myself).
anonymous
  • anonymous
ok ty

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