yego.me
💡 Stop wasting time. Read Youtube instead of watch. Download Chrome Extension

Exploring scale copies


2m read
·Nov 11, 2024

We are told drag the sliders, and then they say which slider creates a scale copy of the shape, or which slider creates scale copies of the shape. So, let's just see, explore this a little bit.

Okay, that's pretty neat! These sliders seem to change the shape in some way and in different ways. So, shape B right over here, it starts off, it looks like the width is a little bit bigger than the height. I'm just trying to eyeball it; we don't know the exact numbers.

In order to create a scaled copy, you'd want to scale the width, you'd want to scale this bottom side and the top side and all of the sides. You would want to scale by the same factor. But as we move this slider, it seems like it's only scaling the width; it's not scaling the height.

So, this slider, shape B right over here, the slider for shape B is not creating scale copies of itself. It's only increasing the width, not the height. While shape A, it looks like it is increasing both the width and the height, so that would be a scaled copy.

For example, that looks like a scaled copy of this, which looks like a scaled copy of this, which looks like a scaled copy of that, which was our original shape. That is not a scaled copy of this.

Let's do another example. So, once again, they say drag the sliders, and they say which slider creates a scale copy of the shape.

Alright, let's get shape A. So, this does look like we're scaling down, but we're scaling both the width and the height by the same factor. So, shape, this shape A slider does look like it's creating scale copies of the shape B right over here.

Well, now we're only scaling; it looks like we're only scaling the height, but not the width. So, this is not creating scale copies of our original shape. It's elongating it; it's increasing its height but not the width.

More Articles

View All
The hire package: A look at hiring forms | Employment | Financial Literacy | Khan Academy
This right over here is an image of an I9 form, which is one of the two forms which you will have to fill out when you take a new job. The other one is a W4. We talk about that in other videos. The W4 form is all about how much taxes the employer should w…
Watch this Octopus Devour Crabs as It Jumps in the Water | Insane Animals | Secrets of the Octopus
Positioning rocks to make the perfect cover, the trap is set. Well-earned brain food. The island octopus has thought up, tested, and executed a killer hunting technique. Six months old, entirely self-taught, and already an accomplished strategist, as she…
What's Left?
Hey, Vsauce. Michael here. And today, we’re going to talk about this. Just kidding. We’re going to talk about this. Left. What’s left? First of all, 90% of humans, regardless of culture or language, are right-handed. And we choose a dominant hand before …
Lecture 1 - How to Start a Startup (Sam Altman, Dustin Moskovitz)
Welcome. Um, can they turn this on? Maybe all right. Uh, people here in the back, can you guys hear me? Is the mic on? No? Uh, maybe you can ask them to turn it on. Maybe we can get a bigger—ah, there we go. All right. Maybe we can get a bigger auditorium…
You Can't Trust Your Ears
I want you to listen to these two sounds and decide which is higher. So this is sound A. (sample sound buzzing) And this is sound B. (sample sound buzzing) Okay, so to me, sound A is clearly higher, but that’s strange because sound A was just a 100 hertz …
Linear velocity comparison from radius and angular velocity: Worked example | Khan Academy
Let’s say that we have two pumpkin catapults. So let me just draw the ground here. And so the first pumpkin catapult, let me just draw it right over here. That’s its base, and then this is the part that actually catapults the pumpkin. So that’s what it l…