欧几里得平行公设

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There are many conspiracy theories, but none of them outweigh that of the 300300 B.C. conspiracy of Euclid's Parallel Postulate. How you may ask? Well it is the year 20192019 and only one of Euclid's Presumptuous Postulates have been solved.

When were all of the birds replaced with spies?

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taken from Euclid's Elements, Book 1

The famous Parallel Postulate, or Postulate 5:

That, if a straight line falling on two straight lines makes the interior angles on the same side less than two right angles, the two straight lines, if produced indefinitely, meet on that side on which are the angles less than the two right angles

What could this possibly mean? Let's take it apart.

If a straight line falling on two straight lines- so we have three lines

makes the interior angles on the same side less than two right angles- so the interior angles formed sum to less than 180 degrees

then the postulate says that those lines will intersect.

This seems obvious (that's why it's a postulate): Because if the sum of the angles is less than 180, then let's say that angle equals xx. Then if we have another angle that's 180−x180-x, the three angles sum to 180, and they form a triangle!

If the lines form a triangle, they aren't parallel.

Now that you know the postulate, what is the condition for two lines to be parallel?

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Video

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Sphingolipid\text{Sphingolipid}
  • Sphinoglipid

Sphinoglipid

Sphinoglipid

Sphingolipid\text{Sphingolipid}

Which of these is a sphingolipid?

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All people need to have some sort of vehicle. This was the largest automobile that I could afford.

Would you like it if everyone laughed at your misfortune?

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Eucy and His Parallel Posse

Title

euclid was a pretty cool dude. He was once known for saying,

"4=54=5 123=456123=456 swag swag golly gosh wohhhooot"

Truly wise words indeed. But that's not all! Want to know more?

Press continue to keep learning

Do you ever wonder about Euclid's Parallel Postulate? Well, look no further! Here is the solution, just for you!

A meme: millenials vs gen z. either way, nothing matters

we all know that nothing matters, but which team are you? millenial or [gen Z?

hmmm cannot bold captions

this is a really excellent picture of the Author, Sylvia Freeman. she is very cute and photogenic

felt cute...might delete

a portrait of the author as a young man (Colorized, 1899)

Test Your Knowledge:

should you give all of your money to sylvia?

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Dark Souls

This is on my mind. YouTube recommended this to me so let's see how it is.

What If We Kissed on The Expii V3 Editor?

Jk jk

Unless…\text{Unless}\dots

3x=4x=43\begin{align} 3x&=4\\ x&=\frac43 \end{align} 123456\begin{array}{c|c|c} 1&2&3\\ \hline 4&5&6 \end{array} 4x+34x+3{\color{Red}{4x}}+3\\ {\color{red}{4x}}+3

Hi

  • hi 1
  • hi 2
  • hi 3

Yes

  1. no
  2. unless
  3. jk

He smiles because the pain inside is too much.

$3x+53x+5

Are you big fart?

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test test testtest

Type a concept, like “slope” or “photosynthesis”.

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