Symmetric Point

Conical Symmetric

It's symmetric.

It's symmetric around the vertex.

Well, actually, this is symmetric.

Yeah? Different symmetric cipher key.

Do you enjoy looking non symmetric?

That these two triangles are symmetric

These two focal lengths are symmetric.

It's kind of perfectly symmetric in every way.

The ellipse is symmetric around the y axis.

As we go from the positive side these are actually symmetric, although I didn't draw it that symmetric it also approaches infinity.

Since this trapezoid is perfectly symmetric, since it's isoceles.

And actually, we see that this matrix is symmetric.

And they're symmetric around the center of the ellipse.

Because these two points are symmetric around the origin.

And it's symmetric, just as you would expect it, right?

Look how big it is. Look how symmetric it is.

So in a symmetric encryption system, basically, the two parties,

Because both sides of these trapezoids are going to be symmetric.

And it's symmetric around the line x is equal to 0.

It looks like oh let me try to draw this symmetric.

Up until the 1970's, cryptography had been based on symmetric keys.

Either one, those are symmetric statements. They mean the exact same thing.

And an interesting thing here is that this is all symmetric, right?

And so we could actually say that since these two triangles are symmetric.

Also, those super symmetric particles are very strong candidates for the dark matter.

And actually, these are symmetric around the line, y is equal to x.

Now, the building block for securing traffic is what's called symmetric encryption systems.

A circle, for example, is symmetric under rotations about the center of the circle.

Now we look at it from Bill's point of view, and it's completely symmetric.

Square. Go to the city square.

looks like, hopefully. It should be symmetric... Let me redraw it, because that's kinda ugly.

A physicist looks for larger, more symmetric patterns that include the established pattern as a subset.

And we're gonna talk, in the first half of the course extensively about symmetric encryption systems.

So one thing to realize is that these two focus points are symmetric around the origin.

Square

Square

Square

Square?

This square might look very square and prim.

You know I'm square. Everybody knows you're square.

Maybe wrap it into a hexagon with a nice symmetric sort of cycle to the flappy parts.

But here we're just going to focus on symmetric cipher where both sides use the same key.

Square root of three times square root of three