Is the converse of Vertically opposite angles true?

A

Apoorva Shukla

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Apoorva Shukla Asks: Is the converse of Vertically opposite angles true?
When two straight lines intersect the vertically opposite angles are equal.

But, can we say that, if the vertically opposite angles of two lines are equal then the lines are straight?



The angles marked equal in orange, come after comparing the two congruent triangles, in the attached image.

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[Solved] QGIS 3.26 is messing with my project files

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[Solved] How could I fix QGIS measuring incorrectly my distances?

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Atsjo Asks: Adiabatic approximation upper bound
In the Wikipedia article "Born–Huang approximation" it is stated that this adiabatic approximation gives an upper bound for the ground-state energy, referencing Born, M.; Kun, H. Dynamical Theory of Crystal Lattices; Oxford University Press, 1954. I do not have access to this book and I could not find any resources on this particular subject. Could anyone show me how the adiabatic approximation gives an upper bound for the ground-state energy or direct me to a resource that does?

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How to restore shine to a copper coin dulled by acid and did I use to much acid

  • I have many questions
  • Chemistry
  • Replies: 0
I have many questions Asks: How to restore shine to a copper coin dulled by acid and did I use to much acid
I found an old copper 1 cent coin of all places, outside on the asphalt road one day. On the tail side, though a little dirty, it had some shine and you can see the coin value, the other side was completely covered in black gunk. It is pretty old and rare so I wanted to clean it.

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Thank you in advance.

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  • Physics
  • Replies: 0
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  • Mohit Bhaker
  • Physics
  • Replies: 0
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SolveForum.com may not be responsible for the answers or solutions given to any question asked by the users. All Answers or responses are user generated answers and we do not have proof of its validity or correctness. Please vote for the answer that helped you in order to help others find out which is the most helpful answer. Questions labeled as solved may be solved or may not be solved depending on the type of question and the date posted for some posts may be scheduled to be deleted periodically. Do not hesitate to share your thoughts here to help others.
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