Do Languishites know the Geodreieck?

[HVC]

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.

[Syt]

also, when i first read the title i thought you had joined a MLM haha

[Crazy_Ivan80]

used quite a lot of them cause they kept breaking.

[Jacob]

used quite a lot of them cause they kept breaking.

They're quite flimsy when used as shuriken, I found.

[Berkut]

I had one of those in high school.

[Maladict]

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)

[The Brain]

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.

[Syt]

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.

[Zanza]

I obviously know what a Geodreieck is and extensively used it whenever trigonometry was taught.

[Jacob]

Q: Can a ninja use throwing stars?
A: Shuriken.

* chortle *

[crazy canuck]

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.

The triangle is for drawing 90° and 45° angles.

Typically, we used separate set-squares and protractors like this:



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

[Grey Fox]

I would never have guessed the English name for the half circle.

[Syt]

Typically, we used separate set-squares and protractors like this:

I like that the set-squares are not square shaped.

[ulmont]

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.

[Jacob]

Typically, we used separate set-squares and protractors like this:

I like that the set-squares are not square shaped.

... but they're used to draw squares.