“How did the math teacher kill himself?”/“He used a hypotenuse.”

There isn’t a “noose” in “hypotenuse,” but this math riddle was posted on Twitter on May 13, 2013:
 
Q: How did the math professor kill himself?
A: He used a hypotenuse.
 
A slightly different version was posted on Twitter on August 28, 2014:
 
Q: How did the triangle kill himself?
A: He used a hypotenuse.
 
 
Wikipedia: Hypotenuse
In geometry, a hypotenuse (rarely: hypothenuse) is the longest side of a right-angled triangle, the side opposite of the right angle. The length of the hypotenuse of a right triangle can be found using the Pythagorean theorem, which states that the square of the length of the hypotenuse equals the sum of the squares of the lengths of the other two sides. For example, if one of the other sides has a length of 3 (when squared, 9) and the other has a length of 4 (when squared, 16), then their squares add up to 25. The length of the hypotenuse is the square root of 25, that is, 5.
   
Twitter
Pope of Chili Town‏
@Chili_Pope80
How did the Math Professor kill himself?
He used a hypotenuse…
*rimshot*
10:53 AM - 13 May 2013
 
Twitter
Megan DeSalvo‏
@megandesa
How did the triangle kill himself?
He used a hypotenuse 😂😂😂
6:32 PM - 28 Aug 2014
 
Twitter
Jacob Crick ⚡️‏
@CrickJacob
Math teacher hung himself…..he used a hypotenuse.
3:57 PM - 27 Aug 2015
 
Twitter
Kent_M‏
@Sir_Kent_M
Lets start the morning off dark; how’d the triangle kill itself? It used a hypotenuse
3:59 AM - 22 Mar 2016
 
Reddit—Jokes
How did the triangle kill itself?
submitted November 16, 2017 by greenpeppers100
It used a hypotenuse.
COMMENTS
SevereHyperbole
I should have seen the sine.
 
Twitter
Lame Jokes‏
@lamejokes_net
How did the triangle kill itself? http://ift.tt/2A4fDki
It used a hypotenuse.
#jokes
12:29 PM - 16 Nov 2017