Chebucto Regional Softball Club

@Bumblefish @3TomatoesShort @EverydayMoggie

OK here is the trick question in the replies I show how to answer it with a compass.

Hitsu Yonai (@hitsuyonai@mastodon.online)

Attached: 1 image @jetlagjen@gts.phillipsuk.org @futurebird@sauropods.win A, B, C for vertices, α, β, γ for angles? But what would I know? It's all Greek to me! 😉 Someone posted a link to this a while back; interesting in the context of the presentation discussion: [#AltTextForMe - help!] I thought it was obvious, but I'd seen in a Primary Maths Challenge (aimed at 9/10, 10/11 year old UK kids) … How many different isosceles triangles with whole number sides can you make from a loop of string 21 units long? https://www.theguardian.com/science/2025/feb/17/can-you-solve-it-the-simple-geometry-question-that-fools-almost-everyone :

Mastodon (mastodon.online)

@Bumblefish @3TomatoesShort @EverydayMoggie

The reasoning you did to make this conclusion:

That’s a moray (@Bumblefish@mastodon.scot)

@futurebird@sauropods.win @3TomatoesShort@disabled.social @EverydayMoggie@sfba.social The opposite one will always be the same size.

mastodon.scot (mastodon.scot)

... means you can understand geometry and congruent triangles.

To know those "slices" are equivalent is "Side Angle Side"

I think you just need to learn to like the compass better as a way to deal with lengths. It can be very powerful I'll show you an example. Someone posted a nasty trick question on this thread. Thinking about it with a compass makes the trick vanish.

@hitsuyonai @jetlagjen

@cinebox @hitsuyonai @jetlagjen

It's a troll.

@hitsuyonai @jetlagjen

"drawing is NOT to scale"

the nerve.

@alexwild

The basket is called a psammophore and if that isn't a five dollar word I don't know one.

@heyitsmetheguy

Look at it. It's crazed.

@undead

I didn't mean that you were off base. (Nor do I think you have anything to apologize for. )

It's fine to prefer a certain notation ... but the notation isn't really what it's about. I'm just suggesting that as a thread to pull to get past what isn't as important here.

I'm very particular about notation because I know it can be confusing as I explain here:

myrmepropagandist (@futurebird@sauropods.win)

@jetlagjen@gts.phillipsuk.org We use the numbers consistently because I find using three letters is more confusing for most students. eg ∠ABC = ∠BCA vs. ∠3 = ∠2 Which do you find less confusing? We could also do ∠B = ∠C but naming angles by single letter is a bad habit since there can be multiple angles at a vertex.

Sauropods.win (sauropods.win)

@undead

The things that are the same are what we are really trying to talk about.

@austinkocher

The reason why it can never stop expanding and taking in new people is because the promise it is built on is a lie.

"criminal immigrants" were the cause of all of what was wrong with the world. If they are gone and those problems remain what does that mean?

It means the notion that this was the problem at all was a lie.

@austinkocher

That they have "move on" to more sympathetic targets exposes the nature of the beast that they have created.

There will never be a day when ICE proudly announces "We have arrested and deported all of the criminal immigrants in the USA and will stay on top of it as new cases come up with a smaller operation."

Nor will they ever say "There are now no longer any significant number of people in the country illegally."

The net will keep expanding that is how this works.

@austinkocher

They have run out of people with "histories" to arrest.

I have just learned that sora may be losing 15 million dollars per day serving video to it's mostly non-paying or paying very little users.

If they were making 15 million dollars per day I would lament how people will do things that make the world worse for money.

But.

It's not even that bad. It is somehow worse.

@Bumblefish @3TomatoesShort @EverydayMoggie

Tracing paper isn't really making a copy. It's just the same figure again. As I see it anyways.

But my point here is that it take two "measurements" with these tools.

I'm going to use some of this I think. Very cool stuff.

@Bumblefish @3TomatoesShort @EverydayMoggie

Absolutely.

But if you want to copy an angle to a new location that won't help.

@Bumblefish @3TomatoesShort @EverydayMoggie

OK great. I still don't see how to cut two slices that are the same size from the identical circles without measuring with the ruler or using the compass again.

@Bumblefish @3TomatoesShort @EverydayMoggie

The peak is the angle at the center, right? I don't see a "cross"

@Bumblefish @3TomatoesShort @EverydayMoggie

But how would you get the angle at the center exactly the same with just ruler?

@semitones @jetlagjen

We use this system, but asking which angles are the same when they are marked like this isn't testing the concept I'm getting at.

It's called "decoration" or "tic marks" and the little marks on the sides of the original triangle I posted are a part of the same system.

I would expect a student to mark the angles like this based on the way the sides are marked. My struggling student would make the wrong two the same.

@Bumblefish @3TomatoesShort @EverydayMoggie

This is a very deep mathematical question in a way. Why do we do geometric constructions with a "straight edge" and compass and not a ruler and compass?