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
Khan Academy India Talent Search 2017
Hi, I’m Sal Khan, founder of the Khan Academy, and I just want to let you know about our India talent search. As you might know, Khan Academy, we’re a not-for-profit with a mission of providing a free, world-class education for anyone, anywhere. To us, t…
Can Your Dreams Tell the Future?
Have you ever had a dream that came true the next day? Have you ever had a vision of the future and then watched it play out in the real world? Have you ever had a feeling that something big was going to happen, and then it does? You are not alone. One ni…
Worked example: Lewis diagram of the cyanide ion (CN⁻) | AP Chemistry | Khan Academy
In this video, we’re going to try to get more practice constructing Lewis diagrams, and we’re going to try to do that for a cyanide anion. So, this is interesting; this is the first time we’re constructing a Lewis diagram for an ion. So, pause this video …
Peter Lynch's Tips to Prepare for a Stock Market Crash
What you learn from history is the market goes down. It goes down a lot. The math is simple. There’s been 93 years, a century. This is easy to do. The market’s had 50 declines of 10% or more. So, 50 declines in 93 years, about once every two years. The m…
Commas in space and time | The Comma | Punctuation | Khan Academy
Hello Garans, hello Paige, hi David. So today we’re going to be talking about commas in space and time because commas have basically one function, which is separating parts of sentences. Separating parts of sentences. What’s neat is that we can use comma…
How To Make Time Work For You
You overestimate what you can do in a day and underestimate what you can do in a year. That’s the main reason why you never have enough time. But there is a way to take control of your time and make it work for you. Let us explain. Welcome to a lux. When…