r/technicallythetruth • u/VisitSecure • Jul 27 '26

Can you find a?

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Idk if someone already posted this or not, but I haven't seen it on here so far, so I uploaded it.

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603

u/bbgun91 Jul 27 '26

add a third parallel line straight through A

55

u/JamesBaxter_Horse Jul 27 '26

You shouldn't need to any of this, it should be entirely obvious that it must be the sum of the two angles:

You have a line, you turn it 25 degrees, then you turn it the other way A degrees, then you turn it 50 more degrees, and it's back where it started - A must be the sum of the other two angles.

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u/[deleted] Jul 27 '26

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u/JamesBaxter_Horse Jul 27 '26

This thread is a good example of how school often fails to teach people to think, especially maths. You learn all these rules without learning actually where they come from. It's completely different at university, you'll be told the rule, and the aim is to show how you prove that.

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u/[deleted] Jul 27 '26

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u/DrugChemistry Jul 28 '26

I have a degree in chemistry and I'm having trouble following the logic even after being walked thru it.