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
US Government and Civics Introduction
Hi, everyone, Sal Khan here. And I just wanted to invite you, or tell you a little bit about our course on US Government and Civics. The first question you might be wondering is why do I need to learn about government and civics? And what I would tell yo…
8 STOIC TIPS FOR SOLVING PROBLEMS WITH PEOPLE | STOICISM INSIGHTS
Have you ever felt utterly overwhelmed by the noise around you, the endless stream of opinions, expectations, and the relentless pressure of ‘keeping up’? Imagine this: ancient stoic philosophers over 2,000 years ago faced the same human emotions, struggl…
How to Make it Through Calculus (Neil deGrasse Tyson)
Through it, I have a, I have a— I don’t quite call it elevated to the level of a parable, but it’s a story in my life that I reference all the time. Right now, I share it with you as short. I’m in high school, I’m a junior in high school and I want to ta…
How To Make Graphene
Picture this: you are thrown into a dingy room and told, “You can’t leave until you have created the thinnest material known to man.” Not only that, it must also be the strongest, the best thermal conductor, and as good at conducting electricity as copper…
Types of discontinuities | Limits and continuity | AP Calculus AB | Khan Academy
What we’re going to do in this video is talk about the various types of discontinuities that you’ve probably seen when you took algebra or pre-calculus, but then relate it to our understanding of both two-sided limits and one-sided limits. So let’s first…
How to make your money grow | Banking | Financial Literacy | Khan Academy
In this video, we’re going to talk about the power of compound interest. To help us understand that, we’re going to compare it to simple interest. Let’s say we have an interest rate of 16% per year and we put in initially $1,000. Simple interest would te…