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
One-step multiplication equations: fractional coefficients | 6th grade | Khan Academy
Let’s say that we have the equation two-fifths x is equal to ten. How would you go about solving that? Well, you might be thinking to yourself it would be nice if we just had an x on the left-hand side instead of a two-fifths x, or if the coefficient on t…
Writing standard equation of a circle | Mathematics II | High School Math | Khan Academy
[Voiceover] So we have a circle here and they specified some points for us. This little orangeish, or, I guess, maroonish-red point right over here is the center of the circle, and then this blue point is a point that happens to sit on the circle. And s…
Limit of (1-cos(x))/x as x approaches 0 | Derivative rules | AP Calculus AB | Khan Academy
What we want to do in this video is figure out what the limit as ( x ) approaches ( z ) of ( \frac{1 - \cos(x)}{x} ) is equal to. We’re going to assume we know one thing ahead of time: we’re going to assume we know that the limit as ( x ) approaches ( 0 )…
Example: Graphing y=3⋅sin(½⋅x)-2 | Trigonometry | Algebra 2 | Khan Academy
So we’re asked to graph ( y ) is equal to three times sine of one half ( x ) minus two in the interactive widget. And this is the interactive widget that you would find on Khan Academy. It first bears mentioning how this widget works. So this point right …
All in for Education: Keep Khan Academy Free
Hi everyone, Sal Khan here. Just to remind everyone that Khan Academy is a not-for-profit organization. That means I don’t own Khan Academy; no one owns Khan Academy. We are a public charity, and we can only do the work we do through donations from folks …
Simon Benjamin on Architectures for Quantum Computing
Simon, why in the past few years has quantum computing gotten so much attention? Right, well, quantum computing is something that academics have been working on now for decades, but what’s exciting is that it’s all starting to work in the sense that what…