This came up on Reddit, where some people claim that this device, used primarily in geometry classes in school, is not known outside German speaking countries, whereas others say that's nonsense.
I could Google, but I thought I'd rather ask the Languish hive mind. :P
Did you have something like this in school? It's 15 cm wide and generally used for drawing/measuring angles, drawing parallel lines, etc., and at least in my time was a key item:
(https://static.betzold.at/images/prod/E_87195/STYLEX-Schueler-Geodreieck-10-Stueck-E_87195_a-XL.jpg)
There's larger versions of it, including for use on the black board:
(https://www.hail.de/media/image/ff/94/b7/Hails-Tafel-Geodreieck-60-cm-GD60-00.jpg)
Did you use something like that? Or something else?
We just use the curved part and call it a protractor.
Yes, that's a "escuadra de geometría" over here. Protractors were far more common though, usually only the showoff kids had the full thing.
We used a protractor in ontario. So, i guess only the curved one in the middle of your image. Didn't use one with a outer triangle.
Only saw one of those a couple of times; usually we used a protractor and two set squares (triangles) one with 45/45/90 angles and the other with 30/60/90 angles.
Triangle or équerre géométrique. Have not used or even seen one since primary school (online sighting post Syt's query does not count :P).
Esquadro geométrico in Portuguese.
Basic équerre/esquadro version is much more common, and bigger versions are used in DiY and by handymen.
Quote from: Eddie Teach on September 15, 2021, 09:33:42 AM
We just use the curved part and call it a protractor.
Tbf, I'm not sure what the reason for the triangle shape is, or what benefit it gives. :D
I don't think it was completely unknown, but standard was just a protractor.
The small one looks vaguely familiar from when I was in school.
The giant one instantly rings bells of Japanese schools with me
What's the advantage of the triangle thing over just the semi-circle thing?
Quote from: DGuller on September 15, 2021, 09:49:50 AM
What's the advantage of the triangle thing over just the semi-circle thing?
Much more effective in combat situations.
Quote from: Syt on September 15, 2021, 09:41:07 AM
Quote from: Eddie Teach on September 15, 2021, 09:33:42 AM
We just use the curved part and call it a protractor.
Tbf, I'm not sure what the reason for the triangle shape is, or what benefit it gives. :D
The triangle is for drawing 90° and 45° angles.
Typically, we used separate set-squares and protractors like this:
(https://media.istockphoto.com/vectors/school-supplies-set-of-transparent-plastic-measuring-tools-vector-id1005459292?k=20&m=1005459292&s=612x612&w=0&h=2CJavYyFfvb-RNrywygN9RtyfXR_Ln1oXheyJaEwWkw=)
I used them in elementary school for various geometry things, and a fair bit in engineering drafting class in Uni (though the triangles were significantly larger).
also, when i first read the title i thought you had joined a MLM haha
Yeah, same as Jake. Never seen the combo though.
When I was little, I saw that my grandmother had a retractable straight edge back from her school days. I didn't understand the point of it, what utility does the retractable part give to it? It's not like you can make the straight edge more compact, the retractable part of it doesn't line up with the outside shell. Years later, when I was taking a history of math class, I realized that it was a slide rule. :blush:
Quote from: Tyr on September 15, 2021, 09:46:56 AM
The small one looks vaguely familiar from when I was in school.
The giant one instantly rings bells of Japanese schools with me
We used a giant protractor too, but it was wood.
Quote from: HVC on September 15, 2021, 09:54:37 AM
also, when i first read the title i thought you had joined a MLM haha
:lol:
used quite a lot of them cause they kept breaking.
Quote from: Crazy_Ivan80 on September 15, 2021, 10:43:07 AM
used quite a lot of them cause they kept breaking.
They're quite flimsy when used as shuriken, I found.
I had one of those in high school.
Quote from: Syt on September 15, 2021, 09:21:55 AM
Did you have something like this in school? It's 15 cm wide and generally used for drawing/measuring angles, drawing parallel lines, etc., and at least in my time was a key item:
Yeah, those were mandatory (geodriehoek, like the German name)
Quote from: Jacob on September 15, 2021, 11:36:05 AM
Quote from: Crazy_Ivan80 on September 15, 2021, 10:43:07 AM
used quite a lot of them cause they kept breaking.
They're quite flimsy when used as shuriken, I found.
A good shuriken is made from the things you use to draw circles (compass, the not-for-magnetic-navigation kind?). Parts from several duct taped together with the sharp ends outwards make for a nice, heavy weapon.
Disclaimer: don't try this at home.
Quote from: The Brain on September 15, 2021, 11:46:47 AM
Quote from: Jacob on September 15, 2021, 11:36:05 AM
Quote from: Crazy_Ivan80 on September 15, 2021, 10:43:07 AM
used quite a lot of them cause they kept breaking.
They're quite flimsy when used as shuriken, I found.
A good shuriken is made from the things you use to draw circles (compass, the not-for-magnetic-navigation kind?). Parts from several duct taped together with the sharp ends outwards make for a nice, heavy weapon.
Disclaimer: don't try this at home.
Q: Can a ninja use throwing stars?
A: Shuriken.
I obviously know what a Geodreieck is and extensively used it whenever trigonometry was taught.
Quote from: Syt on September 15, 2021, 11:49:54 AM
Q: Can a ninja use throwing stars?
A: Shuriken.
* chortle *
:lol:
Quote from: Jacob on September 15, 2021, 09:53:49 AM
Quote from: Syt on September 15, 2021, 09:41:07 AM
Quote from: Eddie Teach on September 15, 2021, 09:33:42 AM
We just use the curved part and call it a protractor.
Tbf, I'm not sure what the reason for the triangle shape is, or what benefit it gives. :D
The triangle is for drawing 90° and 45° angles.
Typically, we used separate set-squares and protractors like this:
(https://media.istockphoto.com/vectors/school-supplies-set-of-transparent-plastic-measuring-tools-vector-id1005459292?k=20&m=1005459292&s=612x612&w=0&h=2CJavYyFfvb-RNrywygN9RtyfXR_Ln1oXheyJaEwWkw=)
I used them in elementary school for various geometry things, and a fair bit in engineering drafting class in Uni (though the triangles were significantly larger).
Yep, that was my grade 6 set up - along with a compass
I would never have guessed the English name for the half circle.
Quote from: Jacob on September 15, 2021, 09:53:49 AM
Typically, we used separate set-squares and protractors like this:
I like that the set-squares are not square shaped. :P
Quote from: Grey Fox on September 16, 2021, 05:27:01 AM
I would never have guessed the English name for the half circle.
From the Latin to draw out, apparently, picking up surveying senses in the 1650s.
Quote from: Syt on September 16, 2021, 05:32:55 AM
Quote from: Jacob on September 15, 2021, 09:53:49 AM
Typically, we used separate set-squares and protractors like this:
I like that the set-squares are not square shaped. :P
... but they're used to draw squares.